[[WMG: Yuki and Towa are secret lovers]]
They managed to keep their relationship a secret from everybody, including the band members. Yuki and Towa's relationship with women are just a cover. Check the anime:
** [[http://i55.tinypic.com/m99b4j.jpg Yuki lived with Towa]] in Towa's apartment for some time
** They are always framed [[http://i54.tinypic.com/34tbsc8.jpg side by side]], sometimes, [[http://i54.tinypic.com/28gyvzp.jpg really close]] [[http://i52.tinypic.com/10wnwbm.jpg to each other]]
** They always leave together and go together in the same direction