He had not known you were a witch until he saw the signs, the subtle use of magic, and the predictable behavior.

You and gojo had been in a situationship for a while now, you knew he liked you and he knew you liked him. It was a secretive relationship, you were a common woman and he was a noble man.

When he saw you walking through the town he ran over and grabbed your hand and dragged you into a secluded area.

Satoru: I know what you are.