I have been dating this guy I have known for more than five years for about a month and a half now. He made it clear to me two years ago that he had feelings for me, but I never felt the same way until recently. The past six months we've been on dates and I started to develop feelings for him. Anyways, he has told me that the reason he always kept pursing me was because I kept rejecting him. He liked the idea of a challenge. But now he has me and I'm afraid that he might get bored with me or the relationship is not what he expected it to be. Of course, he hasn't done anything to make me feel that way, but I can't help having that feeling in the back of my head. How do I keep him interested?