Responses
Remember that at the beginning the seme was hired to look after the uke because the men who hired him got annoyed with the uke...I think he meand that with "I got cheated on again" they both didn't sleep with other people so that can't be the case
In that one chapter with the little sister there was a dialogue something within the lines of “you’re cheating on me again”. Wasn’t this couple %100 faithful?