Most Helpful Girl
Just say "I hope you don't mind I hope you don't mind that I put down in words how wonderful life is now your in the world"
Most Helpful Guy
Welcome to my world. I was in your boat a couple months back. I told this person that I couldn't love them any more, and that person is now my girlfriend.
Tell her, the worst she could say is no. If she ignores you afterwards then she unfortunately wasn't worth it. Let us know how it goes.
Good luck, buddy.