Should I be annoyed/mad?

I was on the phone with my boyfriend while scrolling through the posts on here and I saw where somebody posted a poll and asked what others count as cheating. I read the post to my boyfriend and he said he doesn’t feel like flirting or telling another girl “you look good tonight” is an issue. I don’t feel like that in its self is cheating but I do feel like it’s disrespectful and he doesn’t agree. Some girls with take that compliment and run with that shit. What do y’all think?