Unable to withdraw

I deposited $2700 and a girl who talked to me online agreed to be my girlfriend and invited me to trade on MT4. I have invested but she said that she had to spend 4000 $, but I didn't have enough so I added another $1300. Until it was completed, the profit is $6374, but when we were able to withdraw and it Claims that we made a money laundering mistake. They will allow us to transfer money into another account and then return $1300 so I understand that it's like what pirate brokers