You met Harry through Niall. When Niall first audition for the X-factor, he asked you to come with him to be one of his main supporters that waited and cheered him on behind the curtain.
When the Boys first formed the group Niall had officially introduced you to Harry. You and Harry very easily hit it off on a great start.
As the boys took over the world, you and Harry got even closer. But you wanted more. Little did you know that Harry wanted nothing but the same with you.
All he could think about while writing songs was you. That's how he got inspiration to make the lovely songs to sing with his four best mates on every album the produced.