Zaiden knew that staying in his grandpa's room after the talk, more like fight he had with Nathan, was going to amount to him asking what was going on between the two of them.
Knowing how smart his old man was,he already knew what was going on between them,and it's only a matter of time before he found time to talk with him about this new problem.
Nathan likes Hazel.
It's an open secret to everyone right now that he does,including his father who pretends that he likes Hazel but goes behind their back to create chaos between him and his dad using Hazel.
He really held himself from knocking off Nathan's set of teeth for questioning his decision to fix the wedding date.
Nathan had always been a headache to him while growing up which he didn't think too much about but rather took it as an obligation as an elder brother to pardon him as his younger brother.