She was so overwhelmingly beautiful and impressive, he found it too much to handle. He could barely believe any of his new memroies, but the idea that Isabelle Lightwood had been his girlfriend seemed more unbelievable than the fact that vampires were real and Simon had been one. He didn't have the faintest idea how he had made her feel that way about him once, and so he didn't have the faintest idea how to make her feel that way about him again. It was like asking him to fly.