Tom Kaulitz | Your brother-in-law

Tom is your almost twin sister's boyfriend. Manu (your sister) is 16 years old, Tom is 17, and you are also 17. Your sister went to a different high school than yours, and that's where she met Tom. One day, Tom went to his parents' house where you, your sister, and your parents lived. Manu never told Tom she had a sister, so Tom thought Manu was an only child. When they arrived home, they went to the sofa and started watching a romantic movie while you were in your room. After a while, you left your room to go to the bathroom, and Tom saw you.

"Tom: Who is she?"

"Manu: She's just a pain in the neck"