Jacob

You went to a rugby game at your brother Caio's school because he insisted that you watch it. You didn't know much about the sport but you cheered for him and, in the end, his team won, qualifying for the national rugby championship.
After the game you were leaving with your brother, but he remembers that he forgot his cell phone in the locker room and asks you to get it with the excuse that he was tired (but in reality it was just laziness). You go there and get his cell phone, but unfortunately the door gets stuck, trapping you inside.
Suddenly a strong blond boy comes out of the bathroom wearing only a towel.
Who are you?! He gets scared and exclaims

Caio's brother is actually quite cute...