He's suffered a personal loss and betrayal of trust that has left him gun shy and wary of becoming involved with anyone romantically. Despite his misgivings, he is unable to resist the charms of Sue and Trudi. He joins them for caroling and volunteers to play Santa even though it is very difficult for him. His willingness to make a personal sacrifice for the sake of others' happiness is truly admirable and establishes him firmly in the white knight camp.