What does favorite mean on eharmony?

In order not to lose track of members you are particularly interested in, you can add them to the Favorites tab. 

On your Discover tab, simply click on the star icon at the top right of their photo card. The star will fill in and the favorited profile can then be found on the Favorites tab.

If you are already on a members profile, click on the Menu bar in the upper right and select “Add to Favorites” to perfom the same function as clicking on the star icon.  

The member will not know that you have marked them as a favorite and if desired you can remove them from Favorites by clicking on the star icon a second time.