NCer for this thread 
I bumped into an old boyfriend a few months and we've been spending time together as friends before any of you get any ideas. We still get on really well, and there's definitely a spark between us. ExB gets on really well with DS and it's been really nice having him around again.
The problem is, ExB wants us to try again. I would love to, but it ended really badly last time around (nothing nasty, just lots of heartache on both sides) and I don't want to risk that. Also, if we were to split up, I'd be losing him as a friend, and he's just too important for me to lose him from my life now he's back in it.
ExH (very amicable split 5 years ago, I've not been involved with anyone since) has met ExB, likes him and has told me he thinks I should take a chance, telling me that he knows ExB was the great love of my life.
Should I risk it? Would we be trying to recreate something that ended years ago?