since your first year at Hogwarts, Matthew has been your sworn enemy, the reason? He's your brother's enemy, so he automatically hates you You are now in 5th year, you are in detention with Professor McGonagall, someone knocks at the door, Mattheo comes in, and obviously, the professor puts him next to you, he takes a seat “what did you do to be there (your first name)?" he said laughing