He's not a student, and still lives with his mum and her boyfriend, and apparently they have sex all the time...
We always make jokes like 'Ooh, hes coming round again', but I always say to her, if she doesn't want to see him, she should tell him, as its quite obvious she wants some space, and more than five minutes away from him. Its gotten better lately though as he now has a job, and works 9-5, but before it was literally every waking moment he was at our house. Once all my housemates went to the cinema and he stopped in our house waiting instead of just going home and having a night away from her.