Sometimes the lawyer jokes just write themselves

Married lawyer sues eHarmony for refusing to help him find love This dirtbag lawyer is actually suing a dating service for discriminating against married people.

Let the market place sort out complaints of discrimination. If eHarmony's competition caters to potential customers that eHarmony rejects (and they do) they can exploit that advantage to gain the upper hand. Most business discrimination is actually a case of refusing business. In the long term it is counter productive unless it serves another purpose. In eHarmony's case this particular form of discrimination serves to reassure their clientele that potential dates are really available. You wouldn't buy a house if the deed wasn't free and clear without liens would you?