How do I avoid what I consider a sticky situation ?

My sick s/o has been best friends with a man who is twelve years younger than he is and younger than me. This nice man got divorced twenty five years ago and never remarried. I met him just before he was divorced. My s/o took me over to his home.
Anyway, he very well may be devastated at my s/o’s illness but he knows I’m here alone and emailed me this jewel: “I’d like to come over tomorrow sixty seven miles away because I need a hug. ” Excuse me? I want to be kind to him. He’s a very nice man but I am here by myself or at the hospital with my wonderful daughter plus my stepson is coming to spend the night next week (he adores his dad and is a terrific person) but the thought of having my s/o’s best friend over here “for a hug?” Call me off base and twisted but I’d rather walk on hot coals. What should I say to him? He’s lonely since he lives with and cares for his parents in their nineties.