First post like this. Everyone be fucking gentle.
Little sis who's a loser with no friends and had a shit day x big brother who's always around to hang out with her and take her places like the gas station they always go to late at night for snacks. Big bro helps her get high but not too high before he drives her there. He helps her hit his bong, she's new at it and not a stoner but she had a bad day and he's doing everything that makes *him* feel better after a long day. He plays their playlist on the way there. They get out and he makes sure she's in front of him but never too far away. He's always hypervigilant, especially at the seedy gas station at night. She gets chocolate milk and a bag of cool ranch doritos. He drives back to their apartment but halfway there, his friend calls. He tells him that he's with his girlfriend, actually, but his friend insists he come hang and bring her, too. Big brother and his little sister keeping up the gross, icky charade around his friends the entire night that they're a couple. They are, but they're more than that. Something his guy friends would never understand. So she sits on his lap at the bar while he talks to his friends. She feels less alone, like his friends are her friends, like he's really her boyfriend. He kisses her in front of everyone like normal couples do when they're tipsy, too. And when they call it a night and get a ride home from a friend, he makes sure she can't walk right the next morning. It doesn't matter that she's a friendless loser, big brother will always be there for her.