Board Thread:General Discussion/@comment-6003903-20130915190245/@comment-15260863-20130922211539

What I got from the show was that there is only one person in the entire world who is your destined True Love. Only one person who when you're with you can do magic and break curses. You can be in love with someone and live a long and happy life with them without them being your True Love, without ever meeting your True Love. But once you've met that person, you can never go back, you will never love another the same way again.

With that in mind, Rumbelle, Snowing, AbigailxFrederick, and AuroraxPhilip are explicitly proven in the show as being "True Love". But ReginaxDaniel, HookxMilah, AshleyxThomas are all only possible - they haven't been explicitly proven but there's a strong possibility there. Emma and Graham were not True Loves, I doubt they'd've brought in her One and Only True Love only to kill him off in the seventh episode without anything much happening between them.