I do like her, she's cool but I like her Ex aswell and dont want to piss him off either
Should have thought about that before your time spent...hind-sight
I want to avoid anything blowing up in my face..
Ouch!!! 3 months is not a long time between some break ups...I hope this all ends well.
I say in some senses you did nothing wrong...for you are two consenting adults.
but
By your quotes it seem that you are holding some reservations about what happened.
Good luck.