Questions: Guy's Behavior

I have this male friend, and we agreed to keep it at this level after telling him I liked him. Keep in mind he mentioned not being attracted to me in that way. I've moved on with my feelings, but interestingly, he gets jealous about me being around other men. Like when we are in a social setting and I am talking to a guy, romantically or not, he interjects himself in the conversation. Or even when I talk about my other male friends he visibly gets jealous and disinterested. Its weird because he's in a relationship but acting like this. You would think being my friend would mean encouraging me to explore romantic options and letting me talk to other guys. I understand male friends could be protective but there's a difference between being protective and being jealous. So am I being dramatic or is it possible he may be attracted?

Reason I’m asking this question is because so many men on here say they dislike makeup anything not real etc yet in real life these girls get loads of attention from men probably the most out of any particular type of girl! So being this.. is it just men are lying to themselves or is there more to it why women like this get so much attention? Like men will be sending them money online and seen to simp over these type of women

For instance "baby" and "sweetheart" gives me a little sensation whereas sexy and gorgeous are more physical compliments. Or do you think no terms mean anything from a guy and they just throw out whatever?

What about using red love hearts in text like this. ❤️❤️❤️