First poly relationship

This kinda long so bare with me. Around September of last year I got into a poly relationship with a girl I knew from school. We ended up working at the same place once school was finished. Let’s call her Ashley. Ashely had been in a relationship with her boyfriend for over a year. I am bisexual. So they both had been trying to date me for awhile. I kept saying no bc they didn’t seem to be on the same page as to what they wanted. She had never been with a female before. Which made me think she was just going to do it to keep him. Now she knew that was the type of relationship he wanted. Eventually I agreed and everything was cool in the beginning. We were like a happy Throuple. Then him and I started getting really close. Feelings started to develop between him and I. That’s when everything started to go left. We would have sex together all 3 of us. Then it would just be him and I or him and her. I never tripped. She however did. She started telling him all sorts of lie’s about me. She even brought the mess to work. That was my last straw. I left them both alone. He was begging me to stay. I just don’t do drama. She became full of drama. Now fast forward 4 months. He is back trying to be with me again. He and her are still together somewhat. He is trying to move out of where they stay but Ashley isn’t working and basically has no where to go according to him. This past weekend he was supposed to have moved. Idk if it has actually happened. Part of me still feels drawn to him bc we connected on a deeper level. It wasn’t just sex. However Ashley and I don’t talk we don’t even like each other. I had no problem with being in a Throuple. I actually liked it when things were good. However, I do feel like in the relationship she seem to think she had more power then anything. Which never say right with me. She would be telling me stuff and when I would bring it up to him he’d be like I never said that. Or what are you talking about. It was just a big mess. I feel like I’m going down this rabbit hole again. Idk if I should just leave it alone or give it a go. I’m stuck bc I don’t know where they really stand. If she even knows he’s trying to get back with me without her. Or if he is trying to have his cake and eat it too. Anybody poly have any advice or should I just move on.