Handle with care

Caution tape around my heart, it's a murder scene, worst case ever seen. No blood found, only tears. The only evidence was several broken pieces to a story untold. Now that case has gone cold, but there was a note that said " if you read this I'm not dead I'm still alive, I just had to temporarily kill myself to survive.  I'll be back soon so please hold on to my secret, in your heart is where I'll need you to keep it.  Do me a favor and make sure they rule this case a suicide.. after all we wouldn't want them to know, I mean think you killed me right?