Should I be worried about this man?

This married dude and I have been friends for a few months. Towards the end of our discussion, he thanks me for coming to see him and then told me that he enjoys having me. I thanked him as a response and then began to leave. This has been the first time that he has said that to me. He also copies my words either vocally or through text and he copies some of my movements. If I rest my hand near my mouth, he’ll notice that I’m doing that and will do the same.