Felix was genuinely surprised Alexandra didn't use a PIN or fingerprint to unlock her phone. His eyes went wide as he saw the selfie, Alexandra's breasts looked even better than he had imagined. She was his teacher and it was wrong, but his desire for her rose substantially, seeing her exposed like that. He clicked the screen off, lest he get a full erection. He decided to give it back to her directly, with no password anybody he'd hand it off to, to give to Alexandra, could just rummage around at their leisure.
Looking at his watch, he tried to find Alexandra before his next class started.