Because fans are so possessive they can't even talk of their friends' freely especially those of the opposite sex since they'll put malice and jealousy. I know you need to pay the price of fame but fans do not have the right to own their idols. No one forced you to attend fanmeetings, concerts and events. No one forced you to buy their CDs, albums, tickets and merchandise. Everything is a decision so you have no right to let them be accountable for it. They are not entitled to obey but since they are sincere to you, they allow you to dictate their lives.
So give them atleast RESPECT of life. Stop bashing them for every little mistake they do in their lives. Rather than bashing them and making them feel bad/evil/pathetic/stupid, encourage them to become better.
They're more vulnerable than ordinary people. Everything is exposed. Atleast give them that RESPECT and DECENCY.