Hi PatrickA,

This might answer your question.

Frequently Asked Questions
Q. What is Mutual Match?
A. Mutual Match is a simple and fun way to meet people that are interested in meeting you! Here's how it works:

We'll show you profiles, one at a time, of people who match your search preferences.
For each profile, you select "Yes", "No", or "Maybe" when asked if you're interested in meeting him or her.
If you select "Yes" or "Maybe", we'll secretly show them your profile the next time they sign in.
If they indicate that they want to meet you too, you have a Mutual Match! We will email both of you alerting you to your new match
You can then email your new Mutual Match already knowing that you're both interested in meeting each other.
With Mutual Match, you can review profiles quickly and easily, and only send messages to people you have a mutual connection with. How simple is that?

Q. What happens to the profiles to whom I say "Yes" or "Maybe"? Will they know I'm interested in them?
A. If you say "Yes" or "Maybe" to a profile, we'll secretly show them your profile the next time they sign in. They won't know you're interested in them - your profile will be blended in with other random profiles that match their search criteria, and no indication will be given as to which is which.

Q. What happens to profiles to whom I say "No"? Will they find out I rejected them?
A. No. Once you've said "No" to a profile, you won't see that profile again, unless you want to. And we'll never tell them you rejected them. If you regret saying "No" to someone, you can change your search preferences to include all of the profiles you've said "No" to again and choose a new answer if you wish.

http://mingle2.com/mutual_match/faq

Premium members are able to see who said yes to them.

Hope this helps,

Kim