I love love love my boyfriend. We're totally exclusive and have been together for a year and a half now. But I don't get turned on anymore by him. It's not him. He's extremely attractive in every way. I'm very lucky to have him. But I feel like I want something else for a little bit. I even try to imagine someone else while we're "getting it on" or just until I get turned on enough. I feel like if we were ever to get married, I wouldn't be able to be faithful. What should I do? How could I talk to him about this without hurting his feelings?