Did my friend just come out to me and told me he's interested in me?

So you want confirmation about your suspicions? Well it's hard to tell exactly just from this, but I think I would have the same inclination as you do. Who's to say he would want someone equally fit? He probably cares about and likes you as a person, and physical traits don't really matter after that. If you're receptive to it, let him take the lead. You should reciprocate his actions if you want to give him the go-ahead. If you don't, give it some time before seeing him next, if possible. Try to figure out your own feelings so you'll know how to act around him. If you decide you don't want anything, simply don't reciprocate the touching and gently tell him, if he comes on to you, that you are flattered but don't want to jeopardize the friendship. Good luck.