Y’all tell me if over reacting!!

I noticed that my bf liked one of his coworkers photos (her selfie) and I brought it up bc It really bothered me but then he reply’s with, “I do what I want” and it’s not the first time that it’s happened. I’ve told him that I don’t like it bc it makes me wonder “what does he like about her?” And I’m a naturally jealous person. His response is always like,” she’s just a friend”,”it’s nothing”, “it’s just a like”.

I thought about leaving because I just feel embarrassed that he’s liking other girls photos and I feel a bit disrespected.

Have any of you ever been through this? How did you handle it?