彼かれ以外いがい、誰だれも知しらないと思おもうよ。

kare igai, dare mo shiranai to omou yo.

I don't think anyone besides him knows. casual

もう謝るあやまるいがいに方法ほうほうはない。

mou ayamaru igaini houhou wa nai.

There is no way other than apologizing at this point. neutral