That same study found that randomly assigned interracial roommates at Ohio State broke up before the end of the quarter about twice as often as same-race roommates.
Pansy Parkinson was whispering and giggling behind them with her gang of Slytherin girls. Catching sight of Harry, Pansy called, " Potter, have you split up with your girlfriend? Why was she so upset at breakfast? "
" And what about Percy? " asked Harry; the third-eldest Weasley brother had fallen out with the rest of the family. " Is he talking to your mum and dad again? "