YOU SAID:

i was 6 years old when i met your mom

INTO JAPANESE

私はあなたのお母さんに会ったとき私は6歳だった

BACK INTO ENGLISH

I was six years old when I met your mother

INTO JAPANESE

私はあなたのお母さんに会った時、私は6歳でした

BACK INTO ENGLISH

I was six years old when I met your mother