A common symbol used by tweens and teen girls, recently on Facebook as the majority. It expresses nothing of dear concern or dear heart-felt emotions. It's simply two semi-colons and a heart.

Because it looks damn classy.

This is usually placed after a very pathetic subliminal message post- written in the hopes that a certain person will read it... and think more of it.

Because you used TWO semicolons.

And a heart.