He called me irritating today but stares and looks at me whenever I’m not looking…Why?

Anonymous
Context: me and him were talking for about 3 weeks after he left his ex. we got into a fight and I accused him of her picking him up from work one day and we stopped talking (like that). I then found out he got back together with her because he had a hickey on his neck and tried to say “we aren’t together. the hickey is just the gist of it.” (I should of knew because he started acting standoffish a few days before)

Today he told one of my one of my co workers how “irritating” I am. Never said a word to him at all but whenever I wasn’t looking at him he’d stare/look at me. But would PURPOSELY go out of his way to avoid me and if we crossed paths he’d go an opposite way right after we crossed paths. I also found out today his “girlfriend” set some boundaries between them and she will not tolerate or stick around if he continues to talk to me. She told him she doesn’t want him talking to me.

I ended up apologizing to him last night for accusing him and he accepted it. But was acting weird like he didn’t want to talk and kept walking away.
He called me irritating today but stares and looks at me whenever I’m not looking…Why?
2 Opinion