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: So I’ve been with this girl since about October and we have some mutual friends, but she goes to a different school (you wouldn’t know her) and has some friends I hadn’t met. In December I met some of them and immediately there was one (we’ll call him Derek) who I couldn’t stand. He was all around pushy and always made vaguely sexual comments to GF

After a couple weeks he started getting physical and I shut that down real quick. I told him to stop and asked my girlfriend to tell him the same if he didn’t listen. I thought all was well until fast forward to now and I find he never stopped nor did she stop him. It was never much just grouping here or there. She’s always swat him away but never really told him to stop.

Today I told her that I’m done trying diplomacy and told her to choose either me or Derek. She got mad, called me an asshole, and defended him by saying he’s just joking.

It’s been a few hours and I’m starting to feel off about whether I’m in the wrong or not. So reddit, Am I The Asshole?

presenting my girlfriend and ultimatum after months of trying to reason with her