Upon careful consideration, I've decided that, since Snow was alone when she awoke, she might not even be aware she was kissed. If she was, though, and if she talked about it later, there are plenty of witnesses to say that William kissed her while she slept. And probably someone will figure that's what broke the spell.
The point of the ending is that neither Snow nor the huntsman realized the true meaning of what happened, and so neither knows who their true love really is. And since that makes them just like the rest of us, I actually liked how it ended.
Ozzieamy, I stand by my assessment, but I like your thinking. This really didn't seem like a love story to me either. It's clear, though, that his time with Snow has brought to life a part of the huntsman he had given up on ever knowing again. Before they met he was a broken man, and now he's not. I don't see any way for him NOT to love her. Figuratively and literally, she saved his life. Like you, though, I don't see it as romantic love. It is selfless, though, so I guess that was what was really needed here.
For those others who didn't like the film so well, all I can say is you must be looking for the fairy tale in all this. Yeah, there are plenty of fairies, but this story remakes Snow White in the classic image of King Arthur.
In those tales the health of land and folk was magically tied to the country's leadership. As the King suffered, so did the land. When Arthur first pulled the sword from the stone, the leaderless country was a dark and forbidding place, but after he stepped up and claimed his birthright law returned to England and things improved. When his queen was banished the heart left him, and the land again suffered.
Now we see Snow's foray into the dark forest as an exposure to the evil wrought by Queen Ravenna, but just being there seemed to weaken the spell enough for her to survive even though she was unconscious. She should have died since she was at the forest's mercy, but the forest relented, just as the bridge troll later did. And the more she stepped up and took responsibility, the more things improved.
This wasn't a fairy tale of a princess in love. It was about a queen's right of passage. That's the reason for the scene with the white creature that personified the land. It's also why she returned to her castle fully decked out in armor like Joan of Arc. She was no damsel, she was the hero. Once you realize that and stop looking for soap opera romance, the flick is much easier to enjoy ;)