Years ago - but not decades ago - I had a fling with an acquaintance of the man who is now my DH. It was a very naughty fling - he had a girlfriend at the time and was known to be a player (though I didn't know this until I was already involved).
It didn't last long, but about two years later and just before I met DH, we slept together again. He was just as sleazy as before. I got quite hurt and though he wanted to stay friends (or at least have me around as a casual shag) I completely blocked him out (which did mean avoiding some social events due to DH's connections - he knows nothing of this AFAIK).
Now he's cropped up again randomly wanting to add me on a social networking site. I have to admit it knocked me for six. It took me ages to get over him because he was so nice while we did spend time together, and we got on really well. It was his reputation and his desire not to get into anything serious that made me decide to go no-contact.
What should I do? I feel like it might make things easier with DH to be friends with him but on the other hand I don't want DH finding out, as DH already disrespects him somewhat (most of his friends have slept with the guy as well!)
Knock some sense into me, please 