Lacking chemistry, what should I do?

I recently starting dating one of my really good friends. The guy treats me like gold. He's great!!! So nice!!! I'm always laughing and smiling. However, I'm seriously lacking ual attraction. I don't want to give him up because he's so good in other things, but what should I do? I don't think he feels the same way as I do. My last relationship the guy was a total jerk but really good chemistry! Ugg can't win!