Had sex with my ex. Now I’m confused. NC for 3 months

Ex gf (F30) and I (M33) dated for 3.5 years and lived together. Last year in December she made a decision to leave the relationship and move out. I was completely blind sided. I respected her every step of the way for the move out and then we went no contact immediately.

90 days go bye and she reaches out. Said she would like to meet and discuss. We meet. There’s so much chemistry and history between us as well as sexual tension. We end up having sex.

But now I’m not sure where we stand. I don’t know if I can handle being in the “gray zone”. I already canceled other dates with other single women because her back in my life is a big deal. We didn’t even text the next day after sex, but chatted on the phone the day after. It’s weird.

I think she’s avoidant so I don’t want to address too directly, but I think I have to set boundaries or go no contact again. It’s just too hard. Did I screw up? I love her an immense amount. But not sure of our relationship title or anything has me conflicted. I don’t want to rush back into anything but it’s also hard to just “wait around” for her to reach out.