you are the apple of my eyes

You are the apple of my eyes means One's favorite person;the one you love most. 

In Old English, the pupil of the eye (the round, dark center) was called the 'apple'. It was thought that thepupil was a round object much like an apple (a piece of fruit). When you look at someone, their reflection appears in your pupil. So if someone is the 'apple of your eye', he or she is someone that you look at a lot and enjoy seeing.

"If you really like a girl. It is impossible to see her marry to another guy and still bless them. True love means someone should sneak up and stabs the groom in the back. But I am wrong. In fact, when you really like a girl, you'd be happy for her. When you see her finding her Mr. Right. You will want them to be together. And to live happily ever after." - Ko Ching Teng

 “Lots of things can be fixed. Things can be fixed. But many times, relationships between people cannot be fixed, because they should not be fixed. You're aboard a ship setting sail, and the other person has joined the inland circus, or is boarding a different ship, and you just can't be with each other anymore. Because you shouldn't be.”