First day that I saw you,
thought you were beautiful,
but I couldnt talk to you,
I watched you walk away,
And it felt like I spent all of that second day,
trying to find out what it was that I should of said.

Then I saw you again,
introduced by a friend,
said all the words I wanted to,
on day four and five and six,
I dont know what you did, but all I could think about was you.

Thought I couldn't want you,
more than I did before,
but everyday I love you a little bit more,
find myself asking,
what are you waiting for,
cause' everyday I love you a little bit more.

These days turn to weeks,
bad times convinces...

Ok, well i dont know about you, but i cant seem to find the JLS fan mail address anywhere. But i do know how you can send them mail. You can send them fan mail to the venues they are performing at, at least a week before they perform.
Here is a list of venues in the U.K that do and dont pass on fan mail:

England
DO
-The Adelphi Theatre
-Albans Arena (St Albans)
-Almeida Theatre
-The Anvil Theatre
-The Apollo Theatre (London)
-Ashcroft Theatre (also known as Fairfield Halls) (Croydon)
-Assembly Hall Theatre
-Belfast Odyssey
-Birmingham Academy
-Birmingham Hippodrome
-Blenheim Palace
-Bournemouth International...