I'm a single woman and I work with this married man who is twenty years older than I am and has kids. During our meetings, I've noticed that he never fails to sit next to me. I would sometimes try to find a different spot to sit at, but he continues to sit next to me anyways. If he isn't able to sit next to me at all, he stares at me when I'm not even speaking or doing anything. He has also said to me once at the end of one of our meetings, "I hope you enjoy the warm weather, such as yourself." But then he quickly changed the ending of it by saying, "such as today." He also mirrors my actions and words a lot and doesn't do it with others in the group. Why does he keep doing this?