Ashton felt broken to see his mate suffer like this. In their entire relationship for the very first time, it was Caleb who pushed his mate away. He tried his best to talk to Caleb, to break through like every time Caleb did when Ashton felt upset, but somehow he couldn't convince Caleb.
For instance he bought him some ice cream, like he used to do for his sisters when they were sad, and tried to talk to him. Not only Caleb rejected the ice cream but he shut off every time Ashton brought up the subject by saying, "You don't get it". If only he could explain properly that Ashton was well accustomed with screwing things up.
From time to time Caleb kept texting Warren to check if he was okay. He would have called, but that would have definitely alarmed Karolyn, and she was very clear on not to disturb either of them.