いつまでもいちばん仲良しの英語

Overfamiliarity is the cause of their quarrels.

to quarrel because of being on bad terms with each other

We ate out of the same pan.

A coldness has come between the two friends.

the appearance of being on good terms with someone

a state of being unable to get along well with another

“A hedge between keeps friendship green.”【イディオム・格言的】

the condition of being familiar

“A hedge between keeps friendship green.”【イディオム・格言的】

It's all over between us.

getting along with someone

an extremely bad relationship

to be on bad terms with someone

the quality or state of not getting along with each other

the relationship of being good friends

Do not forget decorum in familiarity.

They are on good terms with each other―great friends with each other.

That couple gets along well.

of a condition, friendly

harmonious relations

to be reconciled with―make up with―a friend

of a relationship between people, to be discordant

the either good or bad relationship existing among people

They were lovers once.

Since when were you close?

a good friend

I envied you for being so close to each other.

They are on good terms.

to keep a good relationship

A coldness has come between the two friends