The Winds of Westeros

Ygritte is a Wildling. She lives as a free woman, far beyond the Wall. She is 'kissed by fire' - meaning that because of her natural red hair, she has been blessed by the Old Gods.
Ygritte is very handy with an axe, as well as knives and spears. Jon Snow first encountered her while out with Qhoran Halfhand. He was supposed to kill her. Instead, he hesitated. That hesitation turned into the comedy of errors. He became separated from the rest of the Brothers and was the butt of many jokes. Ygritte enjoyed taunting Jon. Especially where women were concerned.
I think they are attracted to each other, but too stubborn to admit it. After being captured by the Lord of Bones, Qhoran instigated Jon into fighting. Eventually, Jon kills him. He is sad and confused about the awful turn of events. Ygritte looks at him in astonishment - Jon Snow took out Qhoran Halfhand. Qhoran was the toughest ranger and was respected and feared by the Wildlings. Ygritte realizes there is more to Jon then meets the eye.
"You know nothing, Jon Snow." Ah, Ygritte. We miss you so! Looking forward to seeing the fiery haired beauty teach the lone wolf a thing or two in Season III!