she was my girl friend,she was my girl friend,but now,she is other's wife

问题描述:

she was my girl friend,
she was my girl friend,but now,she is other's wife

正确

用she used to be my girlfriend, but now she is the wife of another man 好点,个人观点

she used to be my girl friend,but now,she is someone else's wife.
这样更符合英文习惯