From Halopedia, the Halo wiki
She briefly dated Vasily Beloi, an Orbital Drop Shock Trooper. At some point in their relationship, she left him. This kept Beloi awake at night and he moved into a phase where he would get angry if someone mentioned her around him. He was eventually able to get over it. Later, Beloi's friend and fellow ODST, Malcolm Geffen, would occasionally joke on Chrissie's expense to comfort Vaz.
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