Mystery.. Just mystery..
How can she explain how she feels if she is afraid to fall? There is only one heart filled with the love of a thousand but she chooses to give it to one. That special one. How can she be sure?
Breaths. If you cannot find the words to say just breathe. If he already knows then he is smart enough to read your lips, facial expression and your energy. Taking time to be silent during cute convos are quite natural. It also gives you time to stare at his wonderfully made face.
Dreams. What we do when we can't act out our emotions. We can imagine all the good things that we want to happen and make it happen later. Never rush, never worry. All good things will come, you just have to keep the dream alive.