Mystery solved. The T-Shirt of Sexual Frustration retains its power.
Amy needs what GoFugYourself refers to as “get a grip friend” so badly. And said friend’s first piece of advice should be to BURN THE DAMN THING.
Maybe get some sage, some holy water, hold a little exorcism. Make it nice if she has to do, but do it, do now, for the sake of her sexual happiness.
If slash when Amy and Dan do this thing for real, she will not be wearing that damn shirt.