I am a twenty year old female, and am utterly unfamiliar with what normal dating should like and would like a second opinion. What is going on with this guy?

I dated a man, fifteen years my senior, who on the first day I met him starting mentioning marriage, asking if I'd like to meet his family and even told me that he loved me. He then hardly contacted me for two weeks and kept asking me if I loved him and encouraged me to always text/call him and would never do it himself. He also made strange comments including "you have to do everything I say and can't say no", and he seemed pretty serious.

This was basically how he acted for over a month. Coming on very strong and then disappearing and he was not interested in sex.

He's intelligent and has a good job (I think) but his actions are utterly perplexing

Thanks in advance for your opinions!