Off my chest: How do I manage, while having to work with him?

Over the past six months off and on, I (22F) had an emotional affair with my boss (M45). Nothing physical, but we flirted, took shots in his car, he offered me weed, and we played golf together.

Two weeks ago, I’ve kept my distance and not talk with him as much, because our last interaction, I don’t really remember much since I was a bit tipsy but from what had happened his wife had called wondering where he was, and after the call ended he asked me “where I want to go with this” and after saying that he offered for me to nap on the couch and watch the northern lights with him and his family. Which I had lied and said I had plans and I called him out that I knew what he was doing and then he said he’s “happily married” and friendly with everyone and that’s when I had kept my distance and felt like I was imagining things like gaslighting myself idk how to describe it then afterwards left from his car. Since then, I came into the office he looked nervous when he saw me and he’s only saying hi and staring at me. I did ask to move into a different department but it has to be approved by someone else so it’s just a waiting process for now.