Search Results: why did he ask me to stay at his place

This guy and I have known each other for 3 years but never met. In the beginning it was really toxic. We stopped talking for awhile. He did message me awhile ago asking how it was going. I messaged him recently for a distraction of a situation i'm going through. He asked me if I still had small feelings for him and I said a tiny bit and asked me why just a tiny bit. I asked him but he never responded. He randomly told me I could stay with him at his place if i went there and then just started sexting me a little bit.

My male coworker and I had feelings for each other. We never met by ourselves. Earlier this year, I finally confessed to him. he admitted too and said he can see us together but it’s difficult as he is in complicated relationship. I stepped away. Its been 6 months. I recently heard him telling that he has bought a place for himself. He was living with his girlfriend before. He hasn’t mentioned about breaking up though.

Now, he asks me questions which seem unnecessary. For example, Last week, I went to conference with another male colleague to another city and he asked if we went out together there. Before leaving for conference, he had asked if the other guy and I are staying at the same hotel.
I want to know why he seems so curious now and asks me all these questions. Please help.