Not too long ago, my therapist had said something to me that made me feel uncertain about how he views me. At one point, I had told him that I liked him as a therapist. Right after I had made that comment, he told me with a big smile on his face that he was glad that I had said that and that I've always been his favorite client. Another time, I was getting ready to leave a session and he followed me out and said, "I hope you enjoy this warm weather, such as yourself". Then he quickly fixed what he had said by saying, "such as today". Other times whenever I'd go in to see him, he'd mirror my actions often. For example, he'd fix his hair after I'd fix mine, he'd sit back whenever I'd sit back, or cross his arms after I'd cross my arms. He also tries to find things in common with me. For example, I had told him that I was Greek. Then, he told me that he was Greek too even though he has told me multiple times in the past that he only has Swedish ancestry. Sometimes, with some of the things that I'm interested in, he'd apply some of my interests into his life that he's never been interested in before. For example, if I was really into feminism, he'd start getting into feminism too.
I'm also in group therapy with him. During these group therapy sessions, he'd would always try to sit next to me even when there were other seats open and available for him to sit in next to other clients. I would try to sit somewhere else to see if he'd would follow me and he never fails to sit next to me. If he isn't able to sit next to me at all, he'll stare at me for a long time after the session is over and as I'm getting myself ready to leave. He'd also use the same words/phrases that I'd use. While we were in the group, I tested it out by using a unique word. So, I said that I was feeling pretty 'stoked' about a certain thing and then he said that he was feeling pretty stoked about that same thing. Normally, it seems like he copies me the most out of all of the other clients in the group.
I'm a single woman in my 20's and he's in his 40's and married. Why does he keep doing this?