Laurence got a girlfriend. Finally, he could have his release every night and he somehow forgot to check on his sister. Her girlfriend is very possessive and didn't want other girls looking at him and he of course gave her sweet words, but he wasn't in love with her at all. But maybe he would finally fall in love. She's good at blowjob and she said that he was her second.
Now, here they are again in the girl's cubicle in the gym and she's down there sucking him with that beautiful sound. They didn't care if someone entered the bathroom. They'll just probably leave after they all leave but he needed to empty his balls.
He's a teenager and he's very active in sex. They have needs and this girl also had needs and he's taking care of all of it.
He somehow heard Kale's voice laughing and then he hushed the girl and entered the cubicle maybe farther from them. They both stop and he mouthed her to continue.