sex with out dating?

So this guy and I have had a thing for a month or so and we've sent pics and videos on Snapchat and stuff and he's said he wants to fuck me but I'm a virgin and he's not but I think I'm okay with having sex with him but is it weird to have sex if we're not dating because idk if he likes me like that or just a wants sex also I don't know if I want to lose my virginity to someone I'm not dating but I basically already told him we could have sex