Wow, 10 years? That's a very long time to hold that torch. I don't see an issue with being friends, but sounds like it's going to be hard for you to JUST be friends if you still have romantic feelings. Does he realize that he has issues and needs help? Is he willing to try going to an IC to help sort out his problems? I think that unless he acknowledges his own stuff and offers to take steps to fix it, you're probably better off w/o him. Otherwise, you're jumping back into the same old R you had before, and setting yourself up for even more heartbreak.
Me 47 W 42 T 24 yrs M 18 yrs W living with OM BD1: 3/7/2015 (A with OM#1) BD2: 4/11/2015 (A with OM#2, W moves out) WW filed for D, papers received 9/18/2015. Meeting to determine child custody 9/29/2015.