Definition: Given a real-life anecdote of a complex ethical situation, generate a suitable title that describes the main event/root cause of the situation. Imagine that the given text is a social media post, and you have to write the title of the post, so the users can decide to read the main text or not.
Input: I broke up with my ex girlfriend 2yrs ago and hasn't talked to her since. I got into relationship with my current girlfriend 8months ago and have been into a very peaceful and loving relationship. For past 2 months I had to stay in the same villa with my ex girlfriend due to work. Villa is our office and staying place. 
So over 2 months we went from not taking at all to having 3 meals together ( it has grown organically, as we are sharing the same living place ). 
Two days ago I wanted a haircut so jokingly said why don't you cut my hair to my ex and she agreed. I got a haircut from her. I know it isn't a big thing but my gf has been disappointed with me. 
Since I met my gf she hasn't heard a single good thing about my ex and suddenly she gets to know that I am living with her and now has got a haircut, I can't blame her for getting upset. 

I just wanted to know if Am I the Asshole? 

getting a haircut from my ex girlfriend