Fuck me, fuck my best friend

<p>A couple of close friends who have been together since they were in college. Although their cultures are half a world away, their personalities are quite similar, and they both seem to be very open-minded when it comes to sex. Both also have boyfriends of the same nationality and they are also very close to each other. During a weekend vacation together, in order to make the fun fun and a bit new, the two couples came up with a very crazy idea. They decided to exchange lovers with each other and have sex together. The lovemaking sessions took place continuously after that.</p>