Board Thread:Character Discussion/@comment-16953943-20140727024837/@comment-4839682-20140729050052

Shadows Vale wrote:

And like I said, weather or not Hook is Emma's true love, she's just now learning to accept her family and let them in. The writers really need to give her time for that before really starting anything between her and Hook. On this show, there is "one true love", more like, you have love that is true for someone. Otherwise, it would be pretty depressing, as Regina, for example, would never get "another" true love. :3 I think you're referring to more of a "soulmate".

The creators even confirmed this notion for us at SDCC.

"Kitsis and Horowitz also clarified the difference between what a true love is versus what a soulmate is on the show. 'True love is when you truly love somebody,' Kitsis said. 'Soulmate is the idea that there's only one person for you.'" source