His heart is at peace and calm. It is fill with contentment on his current life and happy at his fortune.
He decided to bury the past….and the fact that Helia chooses him...…is one that he can be happy about but if she did not choose him what will he do?
Will he banish her? His heart is not strong enough to do that. To his enemies yes. He could even exterminate all of their families.
There is no reason to let a seed of future problem to grow. Nip it in the bud; pull it from the root. But to the people he knew and love?
To the people he has owed so much towards? Could he do such a heartless thing? He can't. Even if his wife ran to the embrace of Kyle the most he can do is divorce her.
Even if Kyle betrays him and covet his wife...could he kill his own friend? Arial does not have many friend especially since he became lord, which means his heart need to be kept safely in a safe, far and impervious from people malevolent intentions.