I manage the Date.com and MatchMaker.com affiliate programs. I can give you higher payout than regular affiliate right off the bat. We have several successful PPC affiliates. Let me know if you want to signup links.
Dating is awesome, although I prefer the usually very high per per sale/order programs. PPC can be very profitable as well, but you often have to meet certain minimum conversions for certain PPS payout levels. Overall, per order makes me more.