We are in a porn game, Jesus Christ! And enough of this politically correct shit. Get rid of this shit and indulge in some transgression. Let yourself go to the thrill of doing what is forbidden at least in the imagination, which does no harm to anyone.Wait a minute, it is not fine. Just because you made out with someone doesn't give the license to do whatever you want without the other person's permission.
Sam did not have Sophia's permission to suck on her breasts. Sophia never gave her consent for that. We don't know what would have happened if Liam had not come. Maybe she would have slapped him for trying to do things without her consent. The crux is that Sam touched all over her when she was in a helpless state, unable to resist without having explicit permission from her to so.