Saying no and meaning it

Gah.

This guy I know had a hear attack last year. He ended up having triple(?) bypass. Before the heart attack he wasn't very healthy, he smoked cigarettes and pot, he drank, and he ate like garbage. Ever since he recovered, he's been calling me and giving me this story that he really wants to see me because apparently I meant a lot to him and now that he realizes how precious life is, he wants to reconnect.

I am flattered, but not interested. I've told him this half a dozen times, but he doesn't want to hear it. So now every couple of weeks I get a phone call that goes like this:

Heart attack: "Hey Nik"

Me: "Hello"

Heart attack: "What's your day look like tomorrow?"

Instigating: "Why?"

Heart attack: "You know I want to see you. You meant a lot to me and I realize that now. How about you go into work late one day this week and I come over?"

Me: "no, that doesn't really work for me. How about I call you when I have some free time?" (ie, NEVER!)

Heart attack: "yeah, like I said, I just really want to see you."

Me: "Thank you, I appreciate that. Thanks for calling, talk to you soon."

The thing is that if I thought he really just wanted to see me as a friend, I would be more than happy to go have a meal with him in public, or meet for coffee once. I'm just concerned that he wants to come over and revisit the relationship we had 10 years ago. Based on a couple of things he has said that I wont repeat here, I'm pretty sure that's what he wants.

I just don't know how to tell him that I didn't really like him that much, (outside of our particular relationship) and besides that I've moved on. 10 years ago I was 22 and he was 41. It was cool to be with an older man, he had a job and money and experience and his own place. Now he has a heart condition.