girl friends or girlfriends?¿

Kari
So I recently just started talking to this really great guy and it's only been about 3 weeks but we're trying to get to know each other right now and not rush into anything but my thing is that we haven't hung out once outside of school but he's expressed his interest in me and we talk to each other on a regular day basis. Then today I was talking to some girls and one of them said that she used talk to him and he never moved on to the next step of asking her to hang out but they only talked for 3 weeks and when I asked him about it he said that they just use to talk and now they're "just friends" and then later on in another class I heard these girls talking about how they were gonna hang out w/ a couple of guys after school and he was one of them they mentioned so I'm just all sorts of confused now and could really use some guidance on what I should do or if these are red flags or whatever😇