How to get along with your boyfriend?

Do you have a boyfriend? Do you know how to do act/behave in a relationship? Now (now isn't gramatically wrong, but it isn't necessary) I have some questions.
I met my boyfriend in the June. Until now wWe have been together for three months. He is a humorous man who makes me happy every day. He is tall, handsome and hard working. I love him very much. However, I sometimes think he cares about money too much sometimes. (Sometimes at the back end of the sentence implies that he only cares about money too much sometimes. Sometimes in the front part of the sentence, where I put it implies that you sometimes think he cares about money too much. I imagine it is the later, as caring about money too much isn't really a 'sometimes' thing, but if not, please ignore this correction)
I should learn how to become personality independence (more) independent not to denpend on him. It's the best way to get along with a man and it's the only way to keep a relationship.