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(30m) was dating a girl (30f) for a couple years. Various issues made us both miserable, one of which was our sporadic / vanilla sex life. We agreed to take some time apart and not be boyfriend / girlfriend but still go on dates, starting over from a clean slate. Since then sex has been great, with us both trying new things. Everything between us as people just dating has been pretty alright... Not amazing, not horrible; also not the point of this post.

When we split up and stopped being boyfriend / girlfriend, we had a candid discussion about boundaries for who we would sleep with and not making the other person upset. We agreed not to sleep with each others friends, and not rub it in the others face if we were sleeping with other people. 

I completely agree with this and have been adhering to it. I haven't had sex with anyone else yet, but have become closer with some women who have obvious interest. My now-ex Facebook stalked one and insisted that I not sleep with her because the new girl gave her "a bad feeling". Another is a girl I've had friend zoned for at least 5 years but suddenly is very interested(we haven't done anything) - my ex had never met her until yesterday at a social gathering and had a 5 minute conversation. The ex is now insisting that I not sleep with this girl because she "knows her".

I'm likely to gonna be having sex with both of these girls anyway, even though my ex doesn't want me to. Does that make me the asshole? 

sleeping with girls my ex doesn't want me to