So me and my dh seperated about 6 months ago. My neighbour and his wife seperated about 3 1/2 years . I have 2 dc and he has 2 both the same ages and go to the same school and nursery.
We often speak at our gates and have confided in each other and supported each other in the past. he split from his wife and a while after that me that and dh were going through a rough patch which we lived apart for 8 months. It was genuinely just friends only and not that often just a long chat in the garden or after the school run at the gates.
Now it's the summer months we've had a few nights where it's been a lovely evening and we would sit in the garden while the kids play in the Wendy house or out in the culdesac on their bikes.
We've recently had a few nights where we would get the kids to bed and have an hour chatting in the back garden with a glass of wine.
The thing is I've started having thoughts of him. I imagine maybe one night when the kids are away at their other parents maybe inviting him round and seeing where things go. Maybe a FWB kind of situation? We are both single and not with anyone and so technically we won't be doing anything wrong but still I don't know if it's a bad idea 
I think I'm still feeling like I'm on the rebound. I have low self esteem and feel better when around him. I don't know if it would be a huge mistake or if it could be one of those things where we are able to never speak of it again or it be a once every now and again thing?