YOU SAID:

I already "befriended" your mom last night.

INTO JAPANESE

私はすでに昨夜あなたのお母さんと "仲良くなった"。

BACK INTO ENGLISH

I already "got along well" last night with your mother.

INTO JAPANESE

私は昨夜あなたのお母さんともう「仲良くしました」。

BACK INTO ENGLISH

I have already made friends with your mother last night.

INTO JAPANESE

私は昨夜あなたのお母さんとすでに友達を作りました。

BACK INTO ENGLISH

I made friends with your mother last night.

INTO JAPANESE

私は昨夜あなたのお母さんと友達になった。

BACK INTO ENGLISH

I made friends with your mother last night.