Be Honest - Honesty plays a very important role in every relationship, if you want an enviable relationship then you must try as much as possible to be honest. Trust is vital. Trust is gained through honesty.
Keep the past in the past - If you want a healthy relationship, you must learn to keep the past in the past, do not bring past events into your relationship, your partners past should be used against him/her. Just concentrate on the present and the future.
Value each other’s interests - If you have different interests, which is perfectly fine, make sure you value what their interests are. Even if your partners interest is something you don't lie normally, you just have to learn to like it.
Give your partner more freedom - No one wants to be caged up, and the more freedom you can allow your partner to have, the greater their appreciation of the wide boundaries that you provide. In a study of breakups and relationship expectations, researchers found that partners who left wished that they had more freedom outside of the relationship.
Master the art of communication - By communication, i mean listening more than speaking your meaning. Pay attention to your partner when he/she expresses himself/herself.
Do not involve 3rd party in your relationship - If you want your relationship to be successful. you must ensure you don't bring in 3rd party into your relationship, if you guys are having issues, try as much as possible to sort it out between both of you.
Build intimacy outside of sex - Sexual passion is not always an enduring factor in long-term relationships, so this golden rule is important to make sure that your relationship has staying power of many intimate moments, share jokes, joy, laughter, and contentedness that will keep you bonded for life.
Accept that no one is perfect - It’s about finding the right person, not the perfect person. The perfect person doesn’t exist. Everyone has flaws. Everyone makes mistakes. Prince Charming probably had one beer too many on occasion. Cinderella probably spent too much on shoes.