How they react when Uther find out you have magic:

Merlin:
Merlin freaked out. He screamed and acted out, trying to get you out. He even confessed everything about him having magic to Arthur. He just wanted you out and okay. He only wanted to be with you.

Arthur:
He fought against his father until the bitter end. You were his love and he wouldn't let you die at the hands of his father.

Mordred:
He contacted the Druids for guidance and told Merlin. He managed to sneak you out to live with the Druids. He stayed with the Druids and you so he could be with you.

They get arrested for magic (only Merlin and Mordred):

Merlin:
You started crying and did everything you could to get him out. In the end it worked.

Mordred:
You had a panic attack. He needed to get out and you were determined to help. He was the love of your life.