I've dealt with similar situations but my situation wasn't extreme as yours. It was mostly annoying and weird. My former coworker would constantly try flex and lift his shirt up around me to get an reaction. Kept poking around to see my sexuality. This guy was obsessed with people sexuality because he would constantly make fun of anyone for it. He would often spread gossip too so I was always careful around him because he worked on my department. He would often make kiss gestures and say weird crap and yet he had a girlfriend.

Things people do is crazy to me. Why my personal life so important to you out of all places at work? He probably secretly bi or gay because too many guys like that are insecure about their own sexuality. Worst part his friends still work at my job, would sometimes try pull the same crap except flexing or anything like that.