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: Context:
My ex and I dated for like a few weeks three years ago and then broke up because she was leaving to travel abroad. We both moved on, not a big deal. We ended up back at the same school about a year later and decided to just be friends rather than try and pick back up.
Fast forward to today, me and my ex are still good friends and she lives in the same building complex as me, so we hang out pretty often.
My girlfriend is pretty shy and has commented that she is afraid that I'm going to find someone prettier or less difficult and leave her. My girlfriend knows that I'm friends with my ex and that we hang out. They even met at a house party last month.

My question is, AITA for still being friends with my ex and hanging out with her without telling my girlfriend?

hanging out with my ex without telling my girlfriend