Family
They lived in Whammy house. Obviously they were orphans, they had no family or they wouldn't be there. However when the bitter and angry blond was forced to share a room with the reclusive red-head a tentative friendship started. That bond grew as the boys did, becoming what they needed. When they were younger it was best-friends, brothers, partners in crime. As they grew older it evolved, they changed from best-friends to lovers. The world could go to hell as long as they had each other. The world might never understand their bond, but it didn't matter. Maybe it wasn't by law, but in their hearts where it mattered, they were family. And that is what made them the lucky ones.