His Perspective: she has to go...

"I'm sorry, John, but I have to go. Maybe we'll catch up later...," she replied, seeming genuinely disappointed.
He nodded, "Yeah, maybe later."
He headed for the shower, hearing her say, "I'll probably be gone when you're done. Talk to you later."
"Yep," he replied, turning and smiling before disappearing into the bathroom. He turned the water on, adjusted the temperature, then stepped out of his boxerbriefs and under the spray of water. He thought of her as he washed, making sure to get fully clean, then lathering his penis with an abundant amount of soap and closing his eyes, picturing her walking out of the bathroom, how her small breasts had jiggled and how her hips turned slightly as she walked.
He came in less than a minute, firing his semen onto the wall of the shower. He let his heartrate slow again, then cleaned up (making a point to rinse the wall) and got out. She had indeed gone, already.
He got dressed, choosing a pair of jeans and a black T-shirt (why be fancy?) then headed out the door.