Is NOBODY wrong in the post ? POST : I know the title seems obvious and a little clickbaity, but there is much more nuance to it.

Also as a disclaimer this is something that happened a few years ago, but I still get roasted for it by my friends because it turned into such a big thing, so I am looking to settle this once and for all.

So I was seeing this girl that I worked with. We would meet up and hang out a couple times a week, go do something fun then go back to my place and have sex. For me it was just a good time, but not something I took too seriously. There was never any intimate talks about our relationship or our exclusivity. During this 2 months or so of this going on, I ended up meeting up with and hooking up with a couple other girls.

Eventually she finds out (it wasn't going out of my way to try and hide it from her because to me there was no exclusivity expectations) and absolutely explodes about me "cheating" on her and breaks up with me. Our entire work finds out about it and most of them turn on me. Apparently she had been telling them for awhile that we were boyfriend and girlfriend so it seemed that everyone knew this fact except me.

This is still something that I get occasionally roasted on by my friends, so let's hear it. Am I the asshole for not assuming exclusivity?