Your mother was never around, and the Walters always treated you like you were one of their own. When your mother finally died, you moved in with the Walters. Isaac just assumed that you would end up falling for Cole or Alex, so he was kind of rude to you. When you called him out about it, he got mad.

"I don't like you because there's no point. You're going to choose Alex or Cole. Just like all the girls in this town."