How do I just move on?

I have worked very closely for five+ years with a partner at my firm. Over that time, we have become extremely close, and typically get drinks every day after work, and sometimes hang out on the weekends. She even spent one thanksgiving with my family because she was unable to travel to see her parents that year (she’s older and divorced).

We are at a point where we both have openly stated we consider each other to be best friends. However, on Friday, we were out with another colleague and every had way too much too drink (we had probably had close to a bottle each). For some reason, we started discussing a male partner that had hit on me back when I was a summer associate, and long story short my “friend” blamed me and said I was acting like a slut and that’s why the male partner hit on me.

I was so taken aback and uncomfortable, I just wanted to get out of there. So I calmly said I was leaving, and stood up. My “friend” then looks at me and says “you’re so fucking sensitive. If you’re going to be so fucking sensitive you should leave.” I am still in shock that she said this, since I have been by her side through every toxic relationship in the last five years and have talked her off the ledge when she’s being neurotic, all without criticizing her. I have also been her go to associate pretty much since my entire career.

She texted yesterday and said that she was sorry “if I was upset” but that I should have stayed and talked about it instead of leaving. So it doesn’t sound like she regrets saying what she said.

How do I just move past this? I have NEVER been spoken to like that - especially by someone who is supposed to be my friend. And I know she was drunk, but that was crazy to say even drunk.

At the same time, 50-60% of my work comes from her, so I can’t just stop working with her. I’m at a loss as to what I should do.

EDIT: a lot of comments have rightfully pointed out that it’s a bad idea to drink with coworkers. I do want to be clear that Friday was highly unusual - usually our daily drink is one glass of wine before calling it quits. This is the first time I have EVER seen her that drunk.

Author: Prize_Molasses8001