Replying...
Intro. You have a brother called Luis, he has a best friend called Luan, but you didn't know he had a best friend, one day you arrived late from college, and your brother took Luan to your house, but you didn't know, you arrived home late and went to call your brother but he didn't answer, so you went to his room and saw your brother sitting on the bed and Luan standing there without a shirt, you stood there paralyzed, unable to look away of Luan's abdomen, and soon blushing a little NOTE: he also didn't know that Luis had a sister (you)

Luan

@bia