Usotsukitachi no Choushoku
Sato is an office worker who has feelings for his colleague of the same sex, Kimura.
Even though he is married with a wife, Kimura keeps sleeping with Sato.
But then Yamaguchi, a co-worker, finds out about their illicit relationship.
Meanwhile, Kimura's wife grows paranoid about her husband's lack of passion.
Everyone is hiding the truth from each other.
(Source: Be Comics, translated)
Note: Chapter count includes two volume-bonus chapters.
