osDate

From the official osDate website:

Fully integrates with major bulletin boards (phpBB, vBulletin, etc.) and FlashChat, and provides several payment modules, multiple skins, and free upgrades.

http://www.tufat.com/s_free_dating_system.htm

To learn more about this Community solution and all the other Community solutions that Wallanet offers go here: http://www.wallanet.com/open_source_packages/community