Men who are in a relationship—would you deem me as controlling or crazy?

My boyfriend has a girl best friend. Backstory, they have been friends for 8 years and she says they are “trauma bonded” because they both got bullied in hs. Textbook reference, trauma bonding is romantic and emotional, not just a word to throw out there like how social media uses it nowadays. A few days before we were official, she would be asking him to put her earrings in for her, take pictures with her hand on his thigh, pictures where’s she’s leaning her head on him, make him post her, sleep in the same bed, etc. in high school, she tried to kiss him and would have pictures of her sitting on his lap. Currently in the relationship, she calls him every other day and talks about s*x and vibrators etc. I put boundaries up at the beginning of the relationship bc I wasn’t comfortable with their dynamic. He says I’m controlling because his girl best friend shouldn’t have to respect my boundaries or “check in” with someone else to talk to her best friend. What do you guys think? Am I crazy for putting those boundaries up? Am I crazy for wanting me to be his best friend and #1 if we are to get married?