Normally I'd say I hate these misunderstandings. But this will be likely resolved in one, two chapters at most, and will help us getting drunk clingy gyaru wife, so it's for the greater good.
I don't know if I'm irked or what, but this premise of "married couple trying to hide their marriage before whole company" is so far-fetched... I can somehow understand, when "young" couple is trying to hide it, but really, marriage? I'm getting so tired of this...
The whole premise of the manga is that their company do not allow for office romances. They don't even try to hide it outside of work, and if it was allowed they would probably be flirting near constantly at work.