Unidentified Beauty: The 80th Flower of Spring & Summer!

This is yet another extremely tiny flower I discovered on our property, while exploring the darker area of our lower forest. It's only about 1/3" in diameter! I had a feeling I wouldn't be able to identify it and after hours of looking at zillions of pictures, I have to throw my hands in the air! I've noticed that when a flower is a very pale color and tiny, I know I'm in for trouble. So, I may not know what this flower is called, but it's certainly pretty!! :)