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: This is a long one, TL;DR at the end.

So I work at a company that has a pretty lax 'fraternization' policy. As long as it's not a direct supervisor or department manager, associates are free to date and mess around all they want. Well, I hooked up with a coworker from a different department (I'm just gonna call him Jack for simplicity's sake) I didn't know all that well (we maybe said hi to each other a few times a week, had like two in depth conversations) and regretted it immediately. It was bad sex, it happens.

I told my friend from another department about the hookup because she and I always talk about our bad sex experiences or funny hook up stories. It was discussed outside of work over drinks. As far as I am aware, she has not told anyone else about it.

Cut to a week later and I find out from someone in Jack's department that he not only told a group of five of his coworkers about it, he went into great detail about the scars on my stomach from surgery I had in my teens and made fun of my weight (I'm overweight and working on it, but he is also on the bigger side so I found this to be a low blow). According to the coworker, his exact words were, "I really lowered my standards for her." 

I was obviously upset by this but decided to let it go because I told someone else at work about the bad sex.

Another week passes and someone from a different department asks if I know Jack. I said yes and she pulled me aside to tell me he had some pretty nasty remarks to say about my personal life. Apparently, because I freely admitted to him that I had numerous partners, he told some more coworkers that I was a whore.

I always admit how many people I've been with because I think that's important to know before sleeping with someone. I get tested regularly, always use a condom, and, again, I freely admit this before any sort of sexual activity takes place.

After this I confronted him in the break room and basically told him to keep my business out of his mouth. He claimed he didn't tell anyone my name and people just happened to guess it was me (nearly 200 people work in our building so I doubt this). I told him to eff off. I definitely could have handled this better.

Now, about a month after the hookup, a friend of mine from high school texts me and asks if I work with Jack. I had recently introduced this friend to a coworker and they've gone on some dates. She and Jack hang out regularly with a group of friends and were talking about our coworker when he asked if she knew me. She said yes and he told her we hooked up.

I'm considering going to HR because of this. WIBTA if I filed a complaint even though I also told someone about the hookup?

TL;DR - hooked up with a coworker, had bad sex. I told a coworker about it and later learned that he has since told at least seven other people (coworkers and people outside of work) that I'm fat, that he lowered his standards for me, and that I'm a whore because I admitted to having numerous partners. WIBTA if I went to HR and reported it?

reporting him to hr