Would you take your avoidant ex back (she was my first love)

So basically we/she ended the relationship 3 months ago, 1 month ago we started no contact ( with one little break). I am in the healing process but I also have one question in my mind. I was her first love as she was mine too. We never had a relationship before or even have kissed someone else.

Now, if she somehow works on herself and she wants to reconnect, it would be very important for me to know if she dated someone else in the meantime (sex, relationship, even kissing) since we had the exclusivity. Technically it wouldn’t have been cheating, but at the same time if I dated no one after the breakup and she did, it feels kind of unfair + „grass is not greener on the other side“type of thing.
Would you agree? Does someone have a similar experience?

I don’t think she is promiscuous but I heard stuff about avoidants and how they cope. I am scared about the thought even though I try to distance myself. She just recently started posting on be real again and updated her profile picture from none to a new one (similar to the one she had before) and she said she wants to fully focus on her career and studies, she can’t see a relationship with me for now. I would say she is something in between fearful and dismissive, mostly fearful though. She is young (20f, I am 24m)