Nipple piercings and giant upset

So, I got my nips done and I love them and I knew before hand my bf wouldn’t approve of a male piercing them at the parlor but I wanted them done and no females work there and I felt strong and like “yeah I can do this” so I get it done and I tell my boyfriend cause I’m excited and he hangs up on me the rants at me that I went behind his back and that it was wrong for a male to do it since it’s a part of my body “we just don’t show to anyone else but our SO” and it ruined my mood and I’m exceptionally displeased that he’s making such a big deal about a professional piercing my nipples. I love them. I love my boobs now and I explained it all to my bf that it made me feel confident and that when I got them it wasn’t like the dude was groping me or anything and I took my best friend with me so I wasn’t alone and he’s being completely upset at me about it and I don’t know what to do. I get not wanting a male to see my boobs but he’s acting like I cheated on him almost and that’s not at all what it is to me. Edit// also, we have a long distance. He couldn’t have been there and I asked prior after I realized he was upset that if it would have helped him to be there and he said “I wouldn’t even wanna be in the room” he’s just extremely possessive or maybe adamant about some piercing guy seeing my boobs for 5 minutes for them to be done.