I think that Anna had to take him out on the balcony to talk his boner down,,and say "look all we are gonna do is cuddle and stuff nothing more".
He probably wanted more but she took herself out of the equation by going to the couch.
Guys,,when they all first went to bed,,Anna was trying to get Lola to sleep next to him,,but Lola said no and went to the far side of the bed,,which then left Anna right next to him,,and he immediately started feeling Anna up,,,Lola was smart to not be next to him.
Whatever the entire purpose of tonight's events were,,everyone and RLC failed miserably,,,,And the person who came up with that dumb fucking idea should get fired.
On another note,,Damn Belle looking ohh so adorable and fuckable on that bed.