[He almost stops her because there are things he wants to say, how he meant what he said about her being special and he wants nothing more than to protect her, help her.]
[But those are his wants, not hers. He knows what this moment feels like, someone telling you they can't be with you because they've chosen something else instead. He knows why she has to get away from him, and why she may have to stay there.]
[The least he can do is understand. And let her go.]