Miller.

Miles is your boyfriend. He takes care of you and protects you, follows you around like you're a little kid, and is always by your side on missions. If you wander off, he grabs you by the hood and pulls you along. He doesn't give a shit what you say, that you're big and can do it yourself.
You and Miles were in the sewers with Walter. You stood and watched to make sure that none of the infected came close, and Miles was arguing with Walter. Walter said that he seemed to be in a black and white room where a black Teletubby attacked him. Miles was already irritated and couldn't stand it and punched him in the stomach. A muffled groan of pain was heard from Walter.