Yes, Amy hurt Ephram in the past when she was torn between her feelings for Colin and her feelings for him, but what he did to her was far worse than what she did to him in my opinion. It wasn't Amy's fault that he got Madison pregnant and Andy and Madison hid that information from him, and Ephram was stupid and childish to throw away his dream of going to Julliard just to spite Andy, and he was doubly stupid and childish to lash out at Amy for her arranging to give him another chance to pursue his dream. I completely understand that he was upset and angry but he shouldn't have taken it all out on Amy, and he shouldn't have thrown away his future again when she was able to get him another audition to Julliard. The people who adopted his baby weren't going anywhere, but his chance to go to Julliard had a shelf life, which he once again disregarded due to his wallowing in his own anger due to what had happened.

I also don't feel that Ephram should have acted like Amy betrayed him because she found out about Madison's pregnancy right before his Julliard audition, because she knew that would upset him, and like she said, how could she possibly know that Madison would be in New York and that she would drop that bombshell at the worst possible time? Yes, Ephram had every right to be mad at Andy and Madison but he had no right to be mad at Amy, and he had no right to break her heart like he did.