Quick! While you're girlfriend's away let's get kinky with our sneaky link. I'll tie you up with rope and then fuck you. I'll even use the vibrator on us to really get things going ????

....

Now that we're done, I'mma head out. Untie you? No I think we should leave you like that for your girlfriend to find you. And anything past that sounds like a "you" problem and not a "me" problem.