Am I wrong for disowning my best friend and beating up the girl who started the drama

Me 34f and best friend 36m have been friends for about a year and a half. Started as work (me as his assistant) but we got close over time and started to shaboink. Now, my friend let’s call her J runs into me at a local grocer after a few years of not seeing each other and we kick it and everything’s cool. I invite her to my house for drinks and then later that night my friend/man comes over and she starts acting funny. Bending over all extra, showing all these stretches she knows and just overall doing too much. Now, the thing is we had a threesome before years ago but not with him and it went horribly wrong. It seemed like she was trying to initiate the same things but this time I was NOT willing to share. I kinda grew out of that. So, he leaves and goes to work after about an hour or two and something in me just wanted to beat the crap out of her for bringing the same snake behavior from before. She said she changed but clearly she didn’t. Anyway I went to clean up because that still wasn’t her strong suit (her sht was everywher) and she acted like she couldn’t do ANYTHING! She fell asleep on my bed while I was cleaning but as soon as my friend/man came back she popped up as if there was an Alarm set! If I wanted to share, she turned me off to it because of you don’t work you don’t play, right? I told him everything and he told me to be smart and don’t beat her up because she might call the police. So I didn’t listen and I dragged that heffa til the cows came to graze…AITA?