Adultdatelink.com-They have over 40 different dating sites to promote and convert better than any other affiliate program I've used! They also have 4 different payout plans to suit anyone's needs! I highly recommend them.

Adultfriender- 3 ways to earn!
1. Up to $1.00 per each unique visitor
2. Earn up to 60% on initial orders and up to 50% on recurring orders!
3. Making money with our Per Order Payout Program just got easier. For the month of July, Adult FriendFinder pays you $100 $110.00 for any order placed on our site, regardless of order type!

Friendfinder- 3 ways to earn!
1. We pay you $1.00 for each person that signs up for a free membership ($2.00 for each woman).
2. You receive 100% of initial orders and reorders. With the free member sign up bonus, you could be earning more than we do!
3. Earning cash is a no-brainer with our per member order program. Every premium member sign-up earns you a payout up to $130.00. The only question is – how many memberships will you drive today?

OutPersonals-
1. Pay per click program is the simplest way to start earning. We track who you refer and give you up to $1.00 per each unique visitor per day (counted by unique IP address).
2. The more traffic you send, the more you earn with our percentage program. You receive a percentage of initial and recurring membership orders. With the free member sign up bonus, you could be earning more than we do!

IwantU.com This online dating service has paid out a whopping $20 million to its' affiliates since 1996.  They have several different ways to make money including pay per click, pay per sign up and rev share.  While they started in the United States, they are extremely popular in Europe, Canada, Australia and Asia.

EasyDate-  This program has a very large member base from the UK and the rest of Europe.  They have a growing amount of members from the US and Canada, so they are worth promoting, and they pay extremely well.

Have a website? Earn money with LinkShare merchants.-They have over 500 companies to promote.  Match.com, Lavalife, Chemistry.com are just a few. They are one of the oldest affiliate companies still online.

HugeTraffic They are the affiliate program for Fling.com and convert extremely well.  They also have bonus days where you can really make some big money!