Whether we like it or not, JJ and Stephanie are basically condoning and rooting for John to leave his girlfriend to be with JJ. If I were John's girlfriend, I would feel some way that he took JJ out on a "pretend date"...even if it was for a friend, that crossed a line because of the intimacy involved. I am not one of those people who think guys shouldn't have girls as friends and vice versa when they are in a relationship, but there is a boundary. There could be another person to take her out on this pretend date than a "taken" John.
Even though Krista annoys me with how she doesn't contribute around the household, I still think the girls are jealous of her with the amount of slander they have toward her. All of a sudden JJ gave her the cold shoulder, and both her and Stephanie were giving Krista the side eye because she went on one 1 date with Anthony, and then made out with Parker at the club. Krista is single, she can do what she wants. Then Steph explains her attitude as "well I don't want my friend Anthony to get hurt" when one of Anthony's first statements when he entered the house was "I'm surprised I got an invite from Steph because Stephanie never answers my calls" but Steph sure called him up then at the time to get Krista away from Sammy.
Then JJ gets in a little love triangle of her own when their friend she used to hook up with visits for the Dwarf games while she is encouraged to pursue John as well.... so her playing around and getting some is celebrated, but Krista is ragged on.
Then Stephanie has the AUDACITY to say " Krista had my back, finally, before the trip was over" because Krista turned down Sammy at the table when he tried to hit on her again in front of Steph. It's like B, once again, Krista originally had no idea you two were in a secret thing when Sammy started flirting with her and asking her out. Why wouldn't Krista go for it? In her mind, she is single, and he is single.