First hangout/movie night HELP

So I’m hanging out with this guy from work tonight and he’s coming over to my place for a movie night. We have been hardcore flirting and even a little sexting but we’ve never hung out outside of work before so I’m really nervous and also, WHAT DO I WEAR?! Like it’s casual so I’m not gonna wear like jeans or something but I also don’t wanna be in my pjs... also, not sure that I wanna go quite as far as sex tonight but I feel like he might want to since we’ve been sexting so idk how to diffuse that? Advice welcome