His eyes turned red when he saw his woman in the arms of another man,which awakened the primal instincts in him to attack but withdrew against doing that when he finally saw in whose arms she was in.
Ethan Sinclair.
It's been a while since he's seen him, or his dad since highschool since he left the states to America to complete his study.
He never really was in any good relationship with him or anyone,but had kept everything normal with him because of his dad's relationships with his dad.
But when he remembered that he was once close friends with Nathan,and also Nathan's mocking face when he nudged at his shoulder made his legs walk on their own accord towards the approaching man to take his girl away from him.
A friend of Narhan can't be trusted,and God knows what he had done to his girl which he could have asked immediately,have it being his dad didn't moved along to call the fuckers name.