Matt felt really bad when he found out that she was right behind him, in episode 2: She's Right Behind You. He had run into Andy's office to show Andy his new moves when she came into the room, right behind him. Matt didn't know that she was there, and Andy kept trying to warn him. It didn't work because Matt never noticed Andy's warnings. So finally Andy had to physically turn Matt's head toward her, and then he saw what Andy was trying to show him all along. He felt really bad about it. Andy and Matt went out for sandwiches and soda later. Matt had no mayo with his, and Andy got a wrap. Matt never did get to finish showing Andy his new moves.