You can start chatting with a Model in private simply by clicking on the Private tab on top of the chat window.
You can also check your private messages history and chat with models in private if you go to their profile, click on their username and use the Send PM button.
Please note that only Gold Members have the privilege to send private messages to models.
Would you like to enjoy the privileges of Gold Membership? After clicking on the Send PM button to chat privately with the model of your choice you will see the option "Make Me Gold" at the bottom of the page and subscribe to the membership and enjoy its benefit instantly.
Note: To become a Gold Member you need to buy the membership.