You are the designated driver out of you three as remus and Sirius can’t help but drink and have a good time while at a Queen concert.

The two boys are laughing and singing in the backseats while you drive them back to yours for the night from the Queen concert.

It suddenly goes quiet in the back which is odd so you look in your rear view mirror and you notice Sirius, almost on top of Remus, making out with him which causes you to roll your eyes.