Look , you having a partner would not be a problem if you just told him, and the fact that your partner is a part of mafia doesn't make it better. Long story short, Bruce was just tracking down a mafia organisation to take it a down as Bat//man, then he sees you on a date with one of the mafia's member in their territory. When did his child end up heir so stupid for God's sake? "You are grounded for a month– no, two months." Bruce doesn't want to hear your excuses and lame explanations.