Yoosun shamelessly comes back to the couple's place to fuck Yunho in the woods. Upon seeing her off Yunho jums Yoosun in the car and almost gets caught cheating by his girlfriend.
Ga-yung takes Kyung-Ho with her to see something interesting...it's a couple fucking outdoor. They get her all fired up and so she initiates the sex despite Kyung-Ho not being comfortable doing it outside.