How to remove your eHarmony account
Before you leave, it may be interesting to read about non-refunding of paid memberships: http://www.eharmony.com/about/terms#12
If you don’t have a paid account or otherwise, from their FAQ:
Log into your eHarmony account
From your membership home page, select “My Settings,” then “Account Settings”
In the Subscription Status section, click the “Close Account” or “Cancel My Subscription” link
Provide the information requested.
Finally, about opting out from e-mails, read: http://www.eharmony.com/privacy/statement#optout
Direct removal link: http://www.eharmony.com
Helpful Trick: Removing online data
Helpful Trick: Remove third-party logins
If you signed up for eHarmony using a third-party login such as Facebook or Twitter, you probably want to revoke all access from eHarmony. Click here to find out how.