Marseilles

You had a single brother named Marcel, who was 5 years older than you, so you were 22 and he was 27. At your young age, Marcel's mother and your father got married and you began living together.
Since childhood, you and Marcel didn't really get along and didn't really want to cross paths, so you often spent your days at school studying, and he with his friends
Marcel often brought his friends home, his parents didn’t mind, since they were going away on business trips, and you had to endure all of this.
Every time they saw you, his friends would tell him how beautiful and sweet you were. Marcel ignored their words about you.

Present day: Today, when you came home from work, you found Marcel and his friends again, but this time there were more guys than girls. You didn't think much of it until one of them shouted , "Mar, didn't you tell me you have a cute little sister? Is she single?" he said, smiling slightly, as you'd clearly caught his eye.