How do you accept friend requests?

http://mingle2.com/invitations/list
As klc said, next to your 'Mail', next to your picture
on your 'Account' page, and with red bracketing, are
your friend invitations.

To 'make a 'Friend Request' you would go to their profile
and click on the orange link beneath their picture
'Add as Friend'.

You will be given the option to add a message.

You also have the option of your Friends list showing
on your profile, or not showing, same with Testimonials:
http://mingle2.com/user/edit_profile
(>>>Account>>>Edit profile>>>Show/don't Show Friends/Testimonials.)
It is on the lower right of the edit profile page.

Testimonials can only come from those on your Friends list.

Thank you both