The question has been in my mind all day, "Would I accept my old buddy's invitation or not?" Here's where my reasoning has taken me.
In a real situation of that kind there would be things such as "feelings" to consider plus the matter of possibly "hurting" a pal from long ago who has reached out to me in friendship. Those sort of touchy-feeling complications
would really compound the question, making a classic Hobson's Choice out of what should be an easy decision.
So let's assume that I could eliminate the emotional aspects and give an unqualified yes or no.
Here's my answer: No.
Of course I would make up some kind of reason that would sugar-coat the truth. But the genuine reality is that I want to remember each friend as he was back then - and myself also. I don't want to modify the past by having to acknowledge the present at the same time. Let's say one of the absolute best periods of my life involved myself and a certain friend when we were both a happy-go-lucky fourteen. When I think of the two of us and our escapades, I somehow become fourteen again for a few minutes. I want to preserve that memory; take it out and enjoy it whenever the mood strikes me. Having an adult sexual encounter with that friend would destroy something beautiful that flourished in great part for the simple reason that we were fourteen.
Call it messing with the time-space continuum if you want to - I just wouldn't want to do it.