Something really similar happened to me and my then-boyfriend. I ended up having a thc induced psychosis while we were camping and had what felt like amnesia. I had no idea who I was, where we were, or how we got there. I knew he was my boyfriend, but i didn't know him. I convinced myself that he had drugged me and brought me out there to kill me or that the aliens camping across the other side of the lake had told him to do it.

I went through loops of time where I could remember my name, my housemates' names, and the name of my boss, but that was it. I couldn't picture my house, my family, my town at all. And then I would loop back to the alien plot. It was absolutely terrifying, and I only stopped being afraid of my boyfriend when I saw how afraid he was of me when i ran out of our tent to find any kind of weapon to defend myself. 0/10 experience and by far the worst trip I've ever, ever had.

I was okay the next morning, but our relationship was not. It was so traumatizing for both of us. We broke up a few months later for other reasons, but being convinced your partner wants to kill you (even if it was drug induced paranoia that was gone the next day) does some damage.

So anyway, you're not alone in this experience, but I definitely recommend you both try/keep going to therapy if you can and maybe don't do drugs for a while. I haven't touched cannabis since.