Did you notice Eva has a type?
First it was Luc. It's told in the start of the book he's from a rich family and a little full of himself in a way and even more so when he became vamp and was a "prince" for a little while so he's kind of powerful.
Then it was Jacks, our beloved prince of hearts with a deadly kiss. He's not exactly rich but we know he had a good place in Apollo's court, he's a powerful fate and he's full of himself like the most immortal people are.
And the last and the least Apollo, the prince of Magnificent North. He's powerful and rich enough to fill bathtubs with jewerly and swim in it if he wants to. Do I even have to say he's full of himself after everything we get to know once Evangeline has reached there? Maybe his million paintings of himself tell it.
Notice how I repeat myself?
They're all full of themselfs, they're kind of rich and definetly powerful people. And they're all princes. They're all god damn princes. So is Chaos and Eva was interested in him and his pretty green eyes TOO.