I'm waiting for you back
I shall wait for you to come back.
I shall wait for you at home.
因为你没mention是回哪里？若是比较亲密关系的，可说成：
I'll be waiting for you...
I won't stop waiting for you until you come back.
I won't away until you come.
I am waiting for you back!
I'll be waiting for your return.
参考资料：||
I will wait for you until you come back.
I'll wait you back.
