Board Thread:Show-Related Questions and Answers/@comment-5834856-20140423092224/@comment-8345449-20140424150027

1. Neal could have been Emma's true love at one point but probably not after he left her. Emma may have forgiven him but she was probably still not ready to love him again. And then he died before she could give him another chance.

2. Not all OUaT couples get the chance to prove their true love to each other through a Sleeping Curse. I am pretty sure the writers mean for us to read behind the lines such as with Regina/Daniel, Robin/Marian, Grumpy/Astrid, Cinderella/Thomas and even Alice/Cyrus.

3. The later episodes Skin Deep etc were all about setting up the premise of the power of TLK breaking curses and other dark magic effects so its quite probable the writers intended the Graham/Emma kiss as an example of TLK.

And also,

Scene from Quite a Common Fairy:

Tinkerbell: You need love.

Regina: You're gonna help me find another soul mate?

Tinkerbell: It is possible to find love again.

Tinkerbell pretty much confirms that it is possible to have more than one soulmate.