One of my friends is dating somebody I dated ten years ago. He was a shit to me and he is showing all the signs of being a shit to her too. I'm not sure what the etiquette is, or indeed should be, on dating the crappy exes of one's friends but personally I wouldn't recommend it. While I find it all a bit odd (and honestly, having spent the weekend with my friend I am now in possession of far too much information about what they've been up to in the bedroom), we were an item such a long time ago that I can't muster the energy to be too upset about it.
The one thing that did touch a nerve though, was when she said he'd told her he had always fancied her. That's as may be, but it was ME he went out with, and we were all friends at the time. I don't really like the thought that he was lusting after her while we were hooking up. Especially as she is the gorgeously petite blonde to my more, um, buxom brunette. I simply didn't need to know that. This particular friend was back of the queue when tact was dealt out, although she's hypersensitive about anything concerning her. Maybe we're all a bit like that deep down.