well im not an expert on this but I think comunication is one of the most important things. my bf like how open i am sometimes and honest. be able to openely ask whats wrong, whats right,what I like and dislike so we learn from our mistakes and know how to please each other.try never to go home mad. try to talk it out. that way you wont bottle up any resentment that can come out later.I read somewhere that you should be nice to each other even when youre mad. (say thank you, and please) little details count. like offering the best seat, giving them a flower just because. things like that matter. dont be afraid to show your emotions. tell the person how you feel often and sometimes in detail. everyone loves that. make each other laugh. talk often on the phone. cause in the end after you get old conversation is all thats gona be left.