Hell Or High Water Question

Was it Toby or Tanner who slept with the casino hotel check in girl?

This is the scene where one of the brothers is facing the camera turned away from his brother who says something about the girls '****' and maybe her being the 'devil in bed'?
(the girl is on top of him)

Was the brother sleeping with this girl Chris Pine (Toby) or Ben Foster (Tanner)?

It was Tanner, the Ben Foster Character.