Caveman's way of showing affection

Look at wat kim hong found out in gua tempurung? take a close look at the pics below...

hearts...

and more hearts...

So tis is how wai ken puts secret messages on the walls of the cave. it cannot b seen by normal human eyes but camera exposes them. mayb onli han hui can read these love notes...hearts....woo. *clap* *clap*..such a brilliant idea. han hui mus b very touched. thx kim hong for the pics=)