Account Sharing is something we do not support. Account sharing always leads to at best account disputes, thefts, character deletions and scams. It can also lead to charges to credit card fraud, where we have to turn over all information about the account holders to the credit card companies and law enforcement. We have never seen any good come from sharing, only bad. The bad may happen in a day, a week or a year, but it will happen. It always does.
If someone asks for your account info, just say no. You have nothing really to gain and everything to lose.
if you have given someone your account info, change your password ASAP and do not give it out again.