Hi, i feel much of what the both of you are feeling are from unresolved issues and thoughts of "what it could have been". The fact is they could not be resolved and unless you both are willing to change the same issues will come up again.
If it were me, i would just put this behind you and move on to meet someone your more compatable with.
Move on and forget this one. Don't live in "should of could of" land.
Especially over a 'romance' when you were 11 years old. Mature love is not something an 11 year old can do so any feelings about it now years later is based on a fantasy.
Live in the here and now! good luck