It wasn’t that he didn’t love her.
It was just that he was so in love with her, and knew that she was his destiny, that he didn’t feel like he needed to give her any more signs of his love.
Meanwhile, she was still wondering what she meant to him. She was still trying to make him love her, waiting for him to express it.
The reality was that he was already in way too deep. What he was looking for at this this point was different from what she was looking for.
And this is when disasters happen. Two people who are in love, but lose each other because she feels like he is not showing his love enough, and he feels that she doesn’t trust his love for her enough.