They were best friends until he caused her accident. She lost her eyesight in her left eye, and her friend feels guilty for causing her accident. He protects and defends her from bullies. She bosses him around, and teases him but loves him for protecting her and being the only real friend she ever had. 

shy guyX tough girl 

A prince is soon to be king. One day some is causing trouble, and is attacking the guards. The prince takes on this person but learns its a girl. He soon falls in love with her and tries to help her. 

Theses sound promising, please PM. ^__^