If you notice suspicious activity on your account, such as messages you haven't sent or photos you haven't uploaded, there are a few things you can do to ensure that your account is secure.
If you sign in to Tinder with your Facebook profile, your Tinder account is tied to a unique Facebook ID. If you believe that someone has gained unauthorized access to your Facebook account, we suggest that you update your Facebook password immediately.
You can also log out of any active session involving your Facebook profile. On Facebook, Just go to your Security and Login Settings on Facebook > Where You're Logged In > find the session you want to end and click End Activity.