In addition, unlike climate controlled sex, they are no longer at any odds regarding the situation with Stockwell. Not only has Brian helped with the posters, but at this point, he helped to publicly expose Stockwell. They are 100% connected, lost in each other, with no doubt about where their relationship is heading. This is what makes futon sex so hot...well that and the arm!porn doesn't hurt.
I think Fangirl happier_bunny's point here is why I think this scene is so hot, other than the tilt of Justin's hips as Brian's balls slap against his ass with each thrust,those large hands framing that blond head while his gaze devours Justin is how at one Brian and Justin are. The reunion brought them together again, climate!controlled sex finds them dicussing important issues, but Futon!sex is the culmination of a partnership that is based on respect, passion and love and Brian worhsiping every single inch of Justin's skin, Justin accepting each and every touch Bunny is quite brilliant.