Reason I ask is I get it too. Mainly friends that have serious partners or are married. Most have sincere desires to have you 'happy like they are'. Some, I think, can't stand to have anyone not miserable like they are.
Some are just trying to live life through a proxy, ie: you. They need to be told in a nice way to get their own.Yes, I have read the mentioned thread and I sympathise. But I have to be honest, some times I have been the other person. Not in the same circumstances though. Had some friends who mistreated their girls and I wished that it could be me in their place so I could treat them like they desrved, but no I never did date a mate's ex, although I understand the motivation.
My close friend here in London dated my last ex, but I was quite happy with that as he too found out that she was as mad as a hatter for himself and we laugh about it now. Serves him right.
Some folks also think that 'getting back in the saddle' might make you feel better, I guess they might feel you've been pretty miserable lately owing to the exboy and friend thing.
Trust me, folks still do it to you when you're 30 too. I HATE the line, 'you should be able to get any girl'. I don't want just ANY girl. I'm picky and I have a right to be. My current flatmate says that and I like that approach better. It builds more confidence. (She's a 31 yo, 5ft10, iceblonde Danish babe btw, and she gets this problem too.) She just went thru hell and it's quite a story. busted him with another bint(english for bitch). If you ask I might tell later.
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"Sometimes I sits and thinks, but most times I justs sits." - Me.