When you sign in you must give your phone number, id, driving license, picture of you holding random objects..., just like when you try to get your bitcoins out of Coinbase.
Then you're randomly assigned a partner who's the only person you'll ever be able to chat to. You're legally married according to the laws of this last chance dating site and you'll never be able to make another account. Think of a one-shot Omegle, it's actually very simple to put together.