Being Brendan's little sister, living in the same house as Simon, there are some things you'd notice about him:
He likes being up early, earlier than everyone else to start making breakfast (enough for more than one person)
- so he may like taking care of others
He somehow makes the best damn coffee in the world
But if you happen to get up earlier, you can hear the shower running in the guest bathroom and he takes AGES in there
When he is out on business, he hardly ever picks up his phone if you call, but he instantly replies to texts
If he doesn't see you in the kitchen when he comes back in the evening, he goes up the stairs just to casually check on you - sometimes you don't even notice him sneaking up and glancing in your room. Your door is open and music in your ears as you sit at your desk and he just smirks at you from outside-
If you notice him he just shrugs and asks how your day was
He rolls his eyes at your movie/video game choice when you two spend an evening together but he is secretly impressed by your taste
He feels uncomfortable by the feelings you cause in his chest when you fall asleep on his shoulder
When you sit out on your small rooftop balcony with drinks he is always teasing you for being a lightweight and getting tipsy so soon
When he comes home injured he'd try to pretend he is okay but you *know* him so you insist on taking care of his wounds and he is secretly moved by that
He can't stop staring at the pajamas shorts you are wearing when you come down for breakfast
