Free Use of My Roommate

When Nate reads an article about two roommates who agree to be "free use" for each other, he starts getting ideas about his tease of a roommate Cara. When he brings up the idea of free use with her, Cara just teases him some more...And then Nate enters the Free Use Dimension, and suddenly...Cara is free to use. But she makes it very clear that Nate is also free for her to use...