That's not something you should feel disgusted about though, if you're the type of person that he really likes and you two spend so much time together...there's not much that can be done. I say just don't worry about it too much for now, if he ever actually admits it, that would be the time when you want to tell him that you're don't really see him as anything more than a friend, it will hurt, but it's probably the most gentle way you can let him down. If it does get worse, to the point that you start feeling even more uncomfortable, you may wanna go ahead and tell him then. I'm curious though, do you just not see any appeal in a relationship right now or is it something that you've never really thought about?