Answer: Facebook changing platform / code! Not to worry though…
If you were having trouble logging in to the Friends Match Me dating website/app via your Facebook login, or staying logged in, or have experienced constant page refreshing, don’t worry, issue resolved. The Facebook Like/Share button was the source of the issue, and the code has been altered now. :-)
ALSO: If you have trouble logging in (or staying logged in) to Friends Match Me with your Facebook Account, try logging out of Facebook, and then logging in again from Friends Match Me, via the top right Connect With Facebook button.
Update: Facebook Connect app upgraded for smoother login & user experience