AdultMate

They provide a unique matching system that offers you four different match types. You can choose those who match best with you on a sexual level, a compatibility level, an astrological level or a character level. By choosing matches based on the level of relationship you desire, you can find just the right person.

Membership

You can join Adult Mate for free, but you will need a paid membership to access all the site's features. For example, in order to view uncensored adult photos of other members, you'll need a paid membership.

They're primarily a European site but does have members from other areas. At the present time, the community has only a few thousand members.

This site works hard to maintain the privacy of members so that even those in looking for extra marital relationships feel comfortable using the site discreetly.