It depends on the type of relationships we are talking about,if the relationship is a relationship 

whereby both partners love each other then the love will make the relationship last long,the 

reasons why they were in the relationship with each other most times will determine what will 

make the relationship to last long,if two people went into a relationship with each other because 

of the friendship they do have then it is the same friendship that will make the relationship to last 

long and when the friendship stops then such relationship will not last long

LOVE. If couples truly love each other they will conquer all struggles in a relationship.

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Starting a relationship is always exciting and fun, but making a lasting relationship takes great effort. After a relationship, you must maintain an honest flow of communication and continue to appreciate your time with your loved ones. Making long-lasting relationships is not always fun, but the advantages of maintaining long-term and binding relationships far outweigh the difficulties you may face. If you want to know how to make lasting relationships, just follow these instructions.

1. Spend some time for romance
Although the "date night" may sound forced, you and someone special should have a date night at least once a week, or more. You do not have to call it a "date night" if it sounds uncomfortable, but you should make it a point to spend quality quality time with no one at least one night a week.

2. Make love at least once a week
You do not have to mark the calendar, and hopefully you do not have to mark it, but you should make a conscious effort to make love at least once a week, no matter how tired you feel after work, or how many tasks you have that week.

3. Take time to communicate
Although your schedule may be very crowded, you need to make a concerted effort to talk to each other every day, no matter how many tasks you have to do. You can take the time to talk over dinner, or talk on the phone if your distance is far apart.

hearing the word relationship is a very sensitive word for the couple, so for the understanding of the person is different little misunderstanding will have its own impact

but everyone has their own way of keeping good relationships

I think the most influential in a relationship is trust, of a trust can arise and effect on other attitudes such as loyalty let alone people who do LDR

next it is keep in communication every day and if your relationship LDR at least twice a week or 3 times do good communication

do dating once a week with your partner so that your relationship will be more tightly and harmoniously

Partners should believe in making the relationship work, no matter what. 

The best advice I can give to have a successful relationship is to have good communication and always be honest. That is a good foundation. But truthfully relationships are work and are not gonna be easy. You have to work at it everyday. 

Making relationship last long now days are very tough and most of the people doesn’t give value to Relationship or person who loves more. Now days people think relationship is like doormat or just change of cloth So they can change/use it whenever they want. If we go back to 20’s or 90’s at least there we find beautiful relationship where our parents or grandparents experienced lot and they knows what makes relationship long-last. Let’s come back to our modern relationship where media or Movie portrait is reflected in young generation mind and messing up value of relationship and Love and emotional things. Now days I saw many people they call-off there beautiful relationship just give lam of reason that parent didn’t approve, break-up I am hurting your word, move-on ,cast , you’re not well-settled, not fair, ego clash, possessiveness, In-law’s issue, divorce, remarriage ..etc., But according to my knowledge let list out few facts what makes our relationship last long :


You Feel Inspired By Your Partner : Too many people think only of what they can get out of a relationship, rather than all of the good that goes into it. So if you feel like both you and your partner are focused on contributing positive things, that's a great sign,
Have Your Own Separate Hobbies ; Just because you're married doesn't mean you should do everything together. Maintaining your own individual interests, activities, hobbies, and friends also helps you maintain your own sense of self. Plus, they give you more to talk about at bed time.
Good Sense of Humor : Humor creates a special bond that, in my experience, makes couples happier and more resilient when they face the challenges of life.
Mutual Respect : If your partner truly believes in you as a person they will be there for you through all life stages and adapt to support your dreams. So mutual respect is important in life.
You Support Each Other's Goals
You Don't Play the Blame Game : Blaming never helps the situation or your relationship - even if whatever has upset you really was your partner's fault.
Good at Compromising : You actually can talk to him about issues and work things out verbally and try to good at compromise as early possible when fight occurred.
Take Each Other's Ideas Seriously
You Don't Criticize Each Other : He/she acknowledges when he's wrong and recognizes when bad experiences may have turned someone bitter.
Your Sex Life Is Still Hot : SEX is most important and not necessary all time.
He/She doesn't act like you owe him/her for him/her being nice to each other.
When he/she ‘s worried or upset, they will actually discuss his /her feelings with themselves.
Couple doesn't label themselves as "a nice guy/girl ." : they will not see a single iota of classic "nice guy/girl" behavior from a man or woman who's emotionally well because he realizes women/men aren't vending machines that accept kindness tokens.
You know that, if you were to choose to leave, he'd let you without reprisal : Emotionally intelligent men/women realize that a relationship can only work with two willing partners and therefore will let you leave.
His relationship with his parents is normal.
He/She won't judge you when you ask for space.

A long lasting relationship is something that many people would really want to achieve especially if 

you are in a relationship with someone you love and care so much about,it is heartbreaking to see 

two lovers break up,and remembering how much 

they truly loved each other even makes the heartbreak worst,i think what can make a 

relationship to last long is when the two people in 

the relationship truly understand each other and 

also respect each other and when they love each other too...

Always Be Honest About Anything

If you want a healthy and lasting relationship, honesty is the key. Do not lie and cover the facts of the couple. If he loves you, surely he will not mind accepting the reality of you most bitter though.

The secret of a relationship can survive is the mutual acceptance of each other, complementary, the sense of belonging, loyalty, and openness.

Be patient for the deficiencies of each partner, mutual defeat,

The existence of sufficient financial resources

Good comunication with partner

A relationship will last a long time if the couple is able to make a solitary defense and able to survive the interference of others who threaten the safety of the household. such as in-laws who are too interfering in the household affairs of husband and wife and also the temptation to cheat.

Grateful for what has been achieved, will make the couple remain in love forever.

Close to the god, the temptation will continue to come, if couples close to his god then he will always remember his promise to God when he pronounced the wedding vows before God.
 

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Accept a relationship as a duty
You may often feel that you do not want to do everything your partner wants to do together. Like working, or seeing a band performance. But actually you also know that it can make your partner happy and mean with you beside him. and Be fair
Not everything "should" be done. There are times when your partner will attend different events at the same time as the event you should attend. No problem. You must be fair and understand that your spouse also has his own life.

Influencing relationship to keep going long now days are exceptionally intense and a large portion of the general population doesn't offer an incentive to Relationship or individual who cherishes more. Presently days individuals think relationship resembles doormat or simply change of material So they can change/utilize it at whatever point they need. In the event that we return to 20's or 90's in any event there we find excellent relationship where our folks or grandparents experienced part and they recognizes what makes relationship long-last. How about we return to our cutting edge relationship where media or Motion picture representation is reflected in youthful age mind and botching up estimation of relationship and Love and enthusiastic things. Presently days I saw numerous individuals they cancel there lovely relationship simply give lam of reason that parent didn't support, separation I am harming your assertion, proceed onward ,cast , you're not all around settled, not reasonable, inner self conflict, possessiveness, In-law's issue, separate, remarriage ..and so forth., However as per my insight let drill down couple of realities what makes our relationship keep going long : 

You Feel Propelled By Your Accomplice : An excessive number of individuals consider just what they can escape a relationship, as opposed to the greater part of the decency that goes into it. So in the event that you feel like both you and your accomplice are centered around contributing positive things, that is an incredible sign, 

Have Your Own particular Separate Interests ; in light of the fact that you're hitched doesn't mean you ought to do everything together. Keeping up your own individual advantages, exercises, side interests, and companions additionally encourages you keep up your own feeling of self. In addition, they give you more to discuss at sleep time. 

Great Comical inclination : Silliness makes an uncommon bond that, in my experience, makes couples more joyful and stronger when they confront the difficulties of life. 

Common Regard : If your accomplice genuinely has confidence in you as a man they will be there for you through all life stages and adjust to help your fantasies. So common regard is essential throughout everyday life. 

You Bolster Each Other's Objectives 

You Don't Look for someone else to take the blame : Accusing never helps the circumstance or your relationship - regardless of whether whatever has vexed you truly was your accomplice's blame. 

Great at Bargaining : You really can converse with him about issues and work things out verbally and attempt to great at trade off as early conceivable when battle happened. 

Consider Each Other's Thoughts Important 

You Don't Condemn Each Other : He/she recognizes when he's wrong and perceives when awful encounters may have turned somebody unpleasant. 

Your Sexual coexistence Is As yet Hot : SEX is most vital and a bit much untouched. 

He/She doesn't act like you owe him/her for him/her being pleasant to each other. 

When he/she 's stressed or irritate, they will really examine his/her emotions with themselves. 

Couple doesn't name themselves as "a pleasant person/young lady ." : they won't see a solitary particle of exemplary "decent person/young lady" conduct from a man or lady who's candidly well since he understands ladies/men aren't candy machines that acknowledge consideration tokens. 

You realize that, if you somehow happened to leave, he'd let you without response : Candidly shrewd men/ladies understand that a relationship can just work with two willing accomplices and in this way will give you a chance to take off. 

His association with his folks is ordinary. 

He/She won't pass judgment on you when you request space.