D.H.
He needs to get out of this relationship right now. This girl is TROUBLE. If they have no children, then that is even better. Tell him to say GOODBYE and don't let the door hit her in the butt on the way out! There is definitely something going on with her. You don't just start looking good, taking rides from co-workers, etc. She is cheating whether she wants to take the blame for that or just keep lying to herself. I would advise him to let this one go! He was young and just needs to move on! He is still so young!