What's a cute thing to say to my dream girl?

We are going to the movies tonight and I am putting a cute note in the popcorn saying how I feel. Sure some people will think its cheesy but from other girls, they think its cute as heck. Anyways, what is something cute to say after she reads it? She is 19 and I am 17. First time really asking a girl out. I used to be a typical guy but she changed me and all I can think about is her. So what would be something cute to say? Thanks.