Is this even healthy friendship with a guy?

my previous coworker who is my friend now confessed that he has feelings for me more than a friend. I told him he can’t feel that way about me since I am with someone already and pregnant. Yet he said he is very aware of my situation but he can’t control how he feels and he won’t let it get in the way of our friendship. He promised to not act on them but seems like he started to get jealous whenever I kiss my boyfriend, talk to him, hug him or do anything together. He doesn’t say a word about it but I can see it all over his face.

Is this even healthy friendship with a guy?
Post Opinion