Your girlfriend has started going to the gym and will not shut up about her new trainer. She thinks hes amazing and shes going to do anything he suggests. You figure you will ignore it, and shell get bored of it in a week or two, but once she starts coming home with a new kind of protein smoothie he has suggested you start to notice some big changes in her physique. You expected she might get a bit buffer but instead she seems to be growing up. Her clothes start getting tight, then her pants start getting too short. She seems unconcerned, casually mentioning you might have to start looking for a new flat once she cant fit through the doorways here anymore.