My GF still lives with her ex-BF. And adter today, I think there could be more.

My GF still lives with her ex-BF. For over a year now since we got together. She's also not willing to move out because of her cats and the lack of money to pay an own apartment. Also, she doesn't want to share an apartment with an other person than him. It really annoys me. I want her to move out and she knows my opinion. Today, after a lecture, I drove home. She was with me in the car, wehn suddenly she started screaming that I have to pull over. I was shocked so i pulled over and asked what's wrong. We were at a parking lot in a little forrest but still about 3 miles from home. First she said she had to pee and walk home. But after I asked why she wanna do that, she admitted that her "roomie" aka ex-bf is going to pick her up and drive her to a shop, where she could buy ice cream. I was shocked because it all happened so suddenly. So she left the car without a kiss or anything and i drove away. Not without thinking what they could do. Now, Reddit, am I paranoid or could there still be something between them? She says she loves me. What do you think?

To all girls: Can you imagine acting like that? Is she acting right? Would you live with your ex-bf as friends?