How to have stable relationship?

Listen to the other person. It’s not enough to just reveal things about yourself. Allow the other person to be vulnerable to you as well. Listen to what they have to say. Don’t use the time you spend with them to just tell the other about yourself. Take the time to listen and pay attention to their responses and what they have to say. Stay connected. Once you have established a relationship with someone, keep in touch. It’s easier now because of technology, so you don’t even have to be geographically in the same place. Write someone, send a quick text message or call the person, just to let him know you are thinking of him. Include them in important announcements and events in your life. Even if you only see each other once a year, a long lasting relationship will survive distance and time if you reconnect properly every so often. In a romantic relationship, keep doing things that keep your bond alive. Go out on dates and touch bases throughout the day. Don’t take each other for granted to keep that emotional connection alive. Stay respectful. You may be comfortable with someone, but maintain the boundaries of respect and politeness around each other.

i think first step is have trust and other person should have also trust in u ,never decieve ,avoid harsh word ,work on strong points

I think the first step is communication. If a couple can communicate well with one another then that eliminates a lot of the conflict that stems from not being able to talk about their issues either within the relationship or without. Being able to express how one feels in a safe environment and feeling as if they are being heard is a HUGE thing. And I think if more couples stopped and actually listened to their partners and worked together on their differences, there wouldn't be that much of an issue. Another thing that makes a healthy relationship is being able to not only communicate conflicted issues but being able to also confont it. Sweeping issues under the rug only causes resentment and dislike for the other person. Its really just a matter of being compassionate to one another and working together toward a common goal: happiness with one another.