Waiting for someone

A tall black student exited the building behind Hannah with a backpack swinging on his shoulders and Hannah glanced back at him. She uncrossed her legs and rose from the park bench with her own backpack to greet him. They embraced in a hug and she kissed him, just a lingering peck on the lips, and they began walking hand-in-hand toward my parked car. I ducked down as they walked past, about 20 yards away, and turned towards the dormitory buildings. When they were further away, still headed toward the dormitories, I got out of my car, shutting and locking the door quietly behind me, and pursued them on foot. They headed in to one of the buildings, so I followed them inside. I could hear their footsteps echoing through the stairwell as they ascended the steps. I tiptoed quickly behind them, up two stories, where I caught a glimpse of the door shutting behind them.

The door had a window peering in to the hallway so I edged by head behind it to see the boy unlocking a room on the right side of the hall with the hand not holding my wife's. He chivalrously led her in in front of him while I stealthily opened the door and slipped into the hallway behind them. I approached the room as the door was being swung shut.

But I heard my wife's clear commanding voice halting the door's progress, "Leave it open! Just cracked a little bit. I like the trill."

The black student just laughed and said "Right."