Am I doing the right thing?

Ok I believe I am doing the right thing for both of us but then I need some assurance that I am…I have been friends with a guy and he’s married and also has a kid. He told me recently that he wanted to have some pleasure with me physically(no no not sex and all) but just some fondling I guess….I seriously believe it’s not right and I even told him as much…I have tremendous respect for his wife as a woman and as a person and though she wouldn’t know it, she would get hurt indirectly and I am going to do all I can to see that she isn’t….Now this guy thinks I don’t love him anymore which is why I am avoiding seeing him…I may loose this friendship forever which seems likely but I am silently praying that I am doing the right thing….I am hurt that a friendship must be based on all this but then I am helpless and have to give in….I hope I have done the right thing….. don’t know what else to do….Given a chance I’ll save this friendship but then I guess I have no cards left with me….If I have to convince him and save this friendship I need a damn convincing reason which is where I am turning to you for help….Can someone tell him what I could tell him such that he’s convinced I still love him but only since he’s married I am not willing to do this….Because he’s a nice guy otherwise