The assumption is that you've changed your relationship status, and that's how they know you're now single. Telling Facebook that you're single, and them using

The assumption is that you've changed your relationship status, and that's how they know you're now single. Telling Facebook that you're single, and them using that information to present an ad for a dating website is not an abuse of private information. You've freely given a first party some information, and they've used that information to display an ad from a 3rd party. There is no abuse of privacy here.