Using affiliate networks is one of the most conventional methods of the monetary strategy used by several dating sites.
This method is preferred because it helps both the sites in generating shared traffic!
Also, they can earn through either CPA or the CPC model. CPA refers to Cost Per Action and CPC means Cost Per Click.
You can increase your chances of success by creating affiliations with sites relevant to your niche and in-turn advertising yourself on their website!
One example of such ingenious coupling could be with free porn tubes such as Smut6!