The Creator was never called "Jesus" nor a Son until He was born of Mary. We do not know what His relationship to God the Father was prior to His birth as a human. He was fully God-John 1:1-but divested Himself of His Divinity to become the first Son of God able to die and pay our sins.
God was speaking of the past--before Christ was born--when He said, "I will be His Father and He will be my Son..." All He is saying is, "From the time that Angels were created, when did I ever say to any of them, "I will be your Father and you will be my Son?"
As Isaiah says:
For unto us a Child is born,
Unto us a Son is given;
And the government will be upon His shoulder.
And His name will be called
Wonderful, Counselor, Mighty God,
Everlasting Father, Prince of Peace.
These are all "will" ...