YOU SAID:

started when we were young girl you were mine

INTO JAPANESE

私たちが若い女の子だったときに始まったあなたは私のものでした

BACK INTO ENGLISH

you were my when we were young girls began

INTO JAPANESE

私たちが若い女の子が始まったとき、あなたは私だった

BACK INTO ENGLISH

When we started the young girl, you were me

INTO JAPANESE

私たちが若い女の子を始めたとき、あなたは私だった

BACK INTO ENGLISH

When we started the young girl, you were me