Bruce knew exactly what Tony did in the bathroom, even if he could usually only smell soap on him when he came back. He tried not to think of it. Instead, he just covered his eyes, breathed, and thought about physics.

After a couple minutes of breathing and acing his exams all over again, he got up and changed out of his pants, climbing into pajamas instead, and lay on the bed, inwardly cursing everything for the deep sense of dissatisfaction he was always left with after sessions like this.

By the time Tony came back, he had mostly calmed down.

"Better." Bruce sat up and took the offered glass, taking a long drink. He resisted the urge to apologize for putting a stop to everything. To apologize for not being able to give Tony everything a good partner should.