How do I talk to him about this

I met this guy this Wednesday at the mall and I got his number. He’s 22 I’m 17 and when we were texting he seemed nice and open minded which is what I like about him besides that he’s attractive and this is what happened

He told me where he works and I told him I’ll meet him at his work place sometime then he started saying sexual things to me and it kind of made me uncomfortable. I still want to talk to him but I don’t know how to tell him that he made me uncomfortable. Im also worried that he might only be interested in a sexual relationship with me