I Want YOU !!
It's a sign of affection or love <3
love i
First you do this sigh < then this sign 3 but obviously together with no space like this: <3
http://facebookcraze.com/tag/broken-heart-for-facebook/
I am not sure what you mean by a heart notification. If you are asking how to make the heart symbol on Facebook, you use this < and put the number 3 next to it (no space). <3 will print out as a heart. If you want a thumbs up sign, use open parenthesis, the letter y, and close parenthesis (y).
Facebook is a popular social networking website. There is no blue heart on Facebook but you can create a heart symbol in posts and comments by typing the "less than" sign and the number 3. A heart signifies love.
<3
If you mean whats it for its for when people give each other loveIf you mean how you do it its
It means that he likes you! He's probably giving you hint! :)) It depends on what kind of situation he used it in
just make it!
It means there are new posts in your dashboard, kinda like facebook notifications.