仲が良いこと
getting along with someone
to be reconciled with―make up with―a friend
仲の悪いこと
the condition of being on bad terms with someone
仲がいいさま
make peace with
仲が悪いさま
They are on bad terms with each other.
仲が悪いこと
a person who acts as an intermediary
the appearance of being on good terms with someone
Overfamiliarity is the cause of their quarrels.
Do not forget decorum in familiarity.