Video which (I’m certain) Alex Gonz hooking up with sister’s friend on vacation

I saw this years ago in the mid2000’s. It’s a video of a guy, his sister and her friend hanging at the pool. The brother leaves to go back to the room. Then the sister’s friend leaves to return as well. When she gets back, she finds the brother smelling her underwear beating off. She’s in a red bikini with white trim.