This is preferable to any date they could have gone on. She's on tiptoe after a moment, trying to get more leverage. Bu she doesn't want too much. The kiss feels as light as spider string, as fragile as paper.
She wants to consume him, to keep him in her pocket. He's the only person who's ever made her feel happy, made her feel good enough for anything, and she doesn't want the moment to end. It's too perfect, and she knows it has to, but she hopes there will be others.