Then do the guy a favor and tell him that you love him but are not in love with him. That you're never going to be able to give him the closeness he needs and deserves and cut him loose so he can find it somewhere else.

You may find down the road it was the worst mistake you ever made, but don't lead him on if it's just not there for you. You might develop those feelings in time, but if not by now, when? You can barely stand to hold his hand.

I'm far from an expert on healthy relationships though, so you can take or leave my advise as you see fit, but I have had my share and more of failed relationships and this seems like one in the making to me.