AITA I’m a grown ass woman- I can spend time with whomever I want.

Am I the asshole? My husband (45m)- let’s call him Keith- and I (45f) have been married 22 years. I have a friend that was in an open marriage before her and her husband separated. My husband has an issue with this. Mainly her “amoral” character. Every time I go to hang out with her- which is typically at a restaurant that serves alcohol usually with some kids in tow- a big fight ensues. He is now demanding I only hang out with her when he is with me. I call bullshit. Since I refuse to let him dictate to me who I can and cannot spend time with I am told now that I am “choosing her over our marriage.” This is a hill I’m willing to die on. Am I the asshole?