Hi and welcome to SR.
Lots of good advice already given. I was struck by your statement that it is not "super severe" right now. It's a good example of how boundaries keep getting pushed outward during enabling. Imagine hearing the story outside our own family that someone had gotten drunk, stripped to his skivvies and made a pass at his SIL in front of his brother/her husband. I always made excuses for AH's behaviors and convinced myself for years they were not severe.
I hope you'll stick around and keep posting. Lots of wisdom to be found. Good luck.