HELP...

I'm trying my best to be the perfect girlfriend and wife-to-be but there is always something I do that is just not right. I just don't understand where I'm going wrong. I don't cheat. Never ever thought of cheating on the person I love. I try to be understanding but sometimes trying to be understading turns the other way. Why does that happen? I think of him but he thinks that what I do, my actions, are not. Is it wrong not to call him coz afraid that I will disturb his slumber? Is it wrong for me not to call him too often to avoid from the bills getting too high? Almost everything I do I will think of him first. But why with what I do, we always get into fights? Why? I just don't understand. Someone pls explain what I'm doing wrong. I'm in need of some HELP! Pls, I'm getting more and more frustrated each day...