Relationship Advice - what would you do?

A little background about myself here - I'm a 23 yo that hasn't really been in a relationship. While I've gone on dates, I haven't had much luck. I'm almost completely out to my whole family and friends, who are all incredibly supportive.Now, I met a guy the beginning of January through an e-dating site. We get along really well and he is just the nicest and most thoughtful guy I've ever met. As I've mentioned, I've gone on a few dates and none of those guys ever treated me as well as he has. While we don't have much in common, though I do enjoy learning about him and his interests.My problem is this: I really think he's cute and all, but I don't find him sexually attractive. He gets all excited when we cuddle and I feel bad because I can't... get hard. This might be a shitty thing to admit, but at times, I think of another guy just so I can get off. I'm a sexual person and I want sex to be a regular part of the relationship. Since having known him, we've only done bj and hj, but never gone all the way.It's kinda nice knowing that he's waiting for me to initiate that, but I don't think I ever will. He's an amazing guy and I know he's not just looking for sex because he's obviously stuck around this long without it. I'd hate to lose him and lose someone great just because he's not 'my type'. But I really do think we'd be better off as friends.TL;DR - I met an amazing guy but I don't find him attractive.I feel pretty bad about this because I feel like I'm leading him on and I think he's falling slowly for me. I'd really appreciate your sincere thoughts on this.