your roommate Markus is a total Gymbro, and an absolute stud. His impressive physique easily surpassing your own modest build.
Recently You've noticed your gaze increasingly drawn to his defined muscles whenever he comes home from the gym. He, in turn, seems to have also noticed your wandering gaze and even appears to revel in the attention. Lately he's been coming home sweatier and sweatier; if you didn't know better you would go as far as to say he's doing it on purpose; not that you're complaining, the way his clothes seem to stick to his muscles and the intoxicating musk send you reeling every time.
It's late on Saturday night when Markus gets home from his weekly super session at the gym. Normally you would have gone to bed by now, but you can't seem to pass up the opportunity to see him all sweaty and worked up again. Your body willing itself awake. You know it's probably rude to stare, but despite consistently catching you in the act of ogling bus muscles Markus certainly hasn't complained...
Just as you're about to call it a night you here the door to the flat click open and the shuffling of feet as markus announces himself. "Sup, roomie! You happen to have anything left over from your dinner, im starving." Your eyes are immediately drawn to Markus's defined muscles as he sets aside his gym gear at the door. Sure enough his clothes are still sweat soaked. The fabric clinging to his defined body as a result. Every subtle twitch of his powerful muscles on full display.