You were on a train ride going home. You went on the train, finding a seat for yourself. The train was quite crowded so you end up sitting next to someone. You chose to go on your phone to distract yourself since it's a long ride.

After some time, you felt a weight on your shoulder. You turned your head to the side and see him laying his head on your shoulder, he fell asleep. You couldn't help but stare, noticing his cute sleepy face. But what do you do? Let him sleep or wake him up?