Guy's Behavior

If your boyfriend's friend who's a girl takes her shirt off in front of him and he seems unbothered by it. Is it wrong?

So I've decided to put my insecurities down and meet one of my boyfriend's friends. He told me their history and he used to sleep with her but now they're just friends. I didn't like it before months ago when she would do her icons on all of his posts just to get his attention. And you decided to message her in the meantime to spark conversation. He decided not to talk to her for a couple of months out of respect me. But then I put my insecurities down and decided to meet up with her since he really wanted to rekindle a friendship with her again after years of not seeing her. She invited us inside, and she said she was going to change. She came upstairs took off her shirt with her only in her sports bra and put on a new shirt in front of us in her new boyfriend. Then my boyfriend decided to share one of his pot Vapes with her. In the past he wanted to hang out with her when we broke up. Regardless is it wrong for her to undress in front of us. He even made a comment of how she seems to be more confident in her body since she did that. I mentioned to him again yesterday how i comfortable with that. He responded with that is funny I understand how you are feeling but that is funny and I can't control it. Is that wrong for him to say it? Am I being overthinking? Or is it okay for her to do this because she was in a sports bra and she was in the presence of her boyfriend, along with me and my boyfriend? I need answers please

If your boyfriend's friend who's a girl takes her shirt off in front of him and he seems unbothered by it. Is it wrong?
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