Kinky Monkey, its way too short. No offense, but it reminds me of a short poem on a valentine card. You can do better than that.
Ellaborate on the idea. Creating more of a setting, a moment in time might be good. Maybe base it on an event you had yourself, when you had similar feelings.
And for the first line, change it to "Do you know a secret"
My idea is that you could actually have a setting, and have a part when somone says that part. It's pretty, short, and sweet, but too short. As you can tell, when I really repeat something, I really feel strongly about it.
Also, you might want to make it capitalized on all the lines, and maybe have questions marks, and periods, so its like:
"Do you know a secret?
A secret that is true?
As long as you dont tell anyone,
I really do love you"
Also, I think you should not have "don't" as a contraction, I suggest making it "do not". Its actually the correct thing to do in grammer.
