They come and are discovered at once

Eventually, nature took its course and the inevitable happened, with Owen shooting his load so hard it hit Jenn's cervix. This was impeccable timing, as Jenn also twitched and spasmed with a loud moan, her legs giving out from under her as she slumped down onto the tile floor, turning back around with a leg each straddling a tile wall around as Owen stepped between them.

The two panted, ill-disposed to do any further activity.

"You're on birth control, right?" Owen asked as he instinctively cleaned his dick.

"Uhhh..." Jenn struggled to form an answer as the curtain suddenly burst open behind them. Owen quickly turned around as Jenn gasped, Owen's legs being the only thing keeping the intruder from seeing Owen's cum leaking out from her.