If you want to remove a Cougarlife account, you can do that in the Settings page of your account.
I’ll show you below how I managed to close my profile using a desktop computer:
1 Log in to your account
by entering your Username (=not your email address!) and password on their site.
2 Choose “My account” in the head above the menu
3 Select the Account tab
and scroll to the bottom, where you will notice a Delete Your Account link.
4 Select Continue to Delete My Profile
and don’t let the hide your profile link distract you (otherwise it’s not closed).
5 Final step – Tell them a reason why you’re leaving
and choose the Deactivate account button.
Your profile has been scheduled for deactivation and will be removed in 24 hours.
You can still undo the removal within 24 hours if you want to.
Source (screenshots taken from): Cougarlife.com