According to the video, Neymar asked her if they could have sex without wearing a condom, then she refused and reacted fiercely.
Another translation of their conversation said;
Neymar: I don’t wanna be beaten.
Girl: Then you’ll hit me.
Neymar: No, no I do not like it, no.
Girl: But I’m going to hit you! Do you know why? Because yesterday you attacked me and left me here alone!
Neymar: Don’t do that! Calm down. Wait a second! Calm down.