Bf embarrassed me at barber

I'm going through chemo right now and made the decision to cut off my own hair. A way to take some power back. There's this barber that does really nice buzz cuts. My bf made a huge deal about it and said I just want to go to a barber to get other men's attention. I said that wasn't true but he didn't believe me. Luckily there is a guy there who is gay so I thought he wouldn't mind if I booked an appointment with him. He said as long as the guy is gay it's fine. My bf came with me and I waited. The guy said he would be with me in a moment and my bf gets mad and said "You told me he was gay!" I said he is and he says "I know a gay man when I see one. He's not gay!" I said he's definitely gay. He has a husband and kids. When I get to the seat my husband starts asking this guy why he's getting so close and he can clearly see she's taken and he's being disrespectful. The barber says "I'm just trying to do my job. Nothing else." I tell my bf to stop and he gets onto me for defending another man in front of him. My barber says "If it makes you feel better, I am gay. I'm married." My bf starts saying he's not and he doesn't look gay at all. He starts asking for pictures of his husband and asked"If you're actually gay are you a bottom or top?" The barber said that's not his business and my bf starts saying he knew it and my barber says "Okay. I'm starting to feel unsafe." My bf gets kicked out, he finishes my hair and I don't even feel good about myself. I feel humiliated. My bf is still convinced I lied and kicked me out the bedroom to sleep on the couch. I tried so hard to make him feel secure. I probably should have just went to the female salon...