Almost sounds like you fell for him hoping he wasn't gay. By the sounds of it he just wanted to make clear that he is but also wants to be a great friend. Feel free to try the talking thing if it doesn't work I have an outline for backup. Here's what you do (hopefully it works) think of all the things he did that were so great. Then imagine spending the rest of your life with someone like that buuuut who is straight. Now chances are there will be someone who fits that. Just keep that in mind when you're at work. Since you fell for a personality (from what I gathered) there's bound to be someone like that who is available. Now when you find yourself struggling to let go of this guy you mentioned just remember in your head that the person you're really falling for is out there. You just have to bump into him (does this all make sense? it can be confusing.) What I'm saying is you don't have to be sad b/c this guy isn't it. You know what you want now it's just a waiting game for the right one