Dont be a loser! Man up, take a loan, re-deposit and win your money back, never walk away from the table as a loser.

Well, in past i lost small amount of BTC in gambling

Luck i able to stop at that time

I think honest is the best option (for me), how about borrow some money at the bank, and just ask your friend to bring your child to movies ?
Don't ganbling & move forward

nice option...
tell ur wife.. ask for forgiveness
ask for a way out (ur wife will be the one to help you at last...)