Creepy/unsettling thing that happened

So today I was laying down with this guy I’ve been seeing for a while and we were talking about sex and I was saying how i liked it rough during sex and like being choked . He then proceeded to put his hand on my neck like he was choking me and said what if I choked you to death and then he said I bet everyone would suspect me first .. and it was just really weird that he said that and made me feel uneasy. He was smiling when he said it so I’m pretty sure he was kidding but it was just weird to me , what do you all think ?