I need help finding a fic. The premise of the fic is that Bucky is sparring with Steve's girlfriend while Steve is away on a mission. Bucky and Steve's girlfriend are engaging in friendly banter and she says to Bucky "who taught you how to fight" which sets off the Winter Soldier. He beats her so badly that she is in a coma. Steve come back and finds everyone freaking out and punches Bucky. There was a part one and two. It was a Tumblr fic.