I didn't like Ellie at all. She was rude and judgmental. She was judgy against Theo's family for having old money/inheriting their business when she inherited a business and money herself. Not nearly the same amount, but still! That's crazy. She was so unlikeable. After that stupid third act breakup they really should have stayed apart. She, in a fit of anger, says the meanest thing to Theo. Wait, now that I'm thinking about it, she wasn't even mad for real! She was just trying to hurt him. It's not like Theo was anything special, but Ellie was just so awful. Everyone deserved better.