I guess we still haven't seen how Snow took away Regina's chance at true love; wasn't that the given reason why Regina hates Snow? I assumed it was related to Snow's father but I guess not: it was the king's first wife who Regina was jealous of (if she was ever even jealous: the entire thing might have been a ploy to get the genie to kill the king). Then I thought maybe Regina really was in love with the genie and Snow would be the one who accused him but I guess not that either.