It is a common scam. A girl will match with you in dating app. Ocassionally talk about Bitcoin investing. You will invest. They have platform called MBG (he/she will ask you to download with private link from bitmbg.com). This platform is fake. I keep trading one day and won 33,000 USDT. Now my investment is frozen and they need me to deposit 2000USDT to unfreeze it. You might get some part of the investment back just to make you believe in it. In my case i lost 500cad worth of coins because my account is freezed.