Each person/user should be responsible for his/her account. If you were so worried about possible misuses of your account, your friend simply could create a new account and start fresh. The fact that you "handed" over your the account to your friend is highly suspicious to me as well (who knows if you didn't sell your account to him?).
Anyways, if you lacked responsibility to handle your account, you can't just ask the forum to "forgive" for your lack of care, it just doesn't make sense. That should be your top priority even before thinking in lending your credentials...