Why did he do this?

This happened awhile ago but I was hoping to get some insight on why it happened. I was hanging out with my best friend and two of her guy friends. I later found out that one of the guys liked me and said he wanted to date me plus he kept making sexual jokes, wanted me to call him daddy (it was kind of cringe) and added me on Facebook. The first day all four of us were hanging out I was wearing a low cut shirt showing cleavage (I have big boobs) and he was sitting next to me on couch and he grabbed the neckline of my shirt and pulled it up to cover my boobs up so my cleavage wouldn’t show. This was our first day meeting each other too. Why would be do this?