Phillip has every intention of making sure she decides this was an excellent idea. Despite his general attitude about... everything, he is capable of being discrete, especially when it is part of the game. The way he leans in from the outside makes it look like they're just having an intimate conversation, clearly people who are attracted to each other if nothing else. The important part is that the location of his arm is also concealed, hidden from view by her form as he presses his fingers up against the sheer fabric to stroke over the folds that lie beneath. The touch grows firmer, his eyes glancing up periodically to Gustavain's face to make sure he doesn't jump too far ahead, to a place where covering will be too difficult.