Lighter Than Air

I'm afraid, the simple sigh ... You breathe me out - and I am gone. Thought I was more than, the air thats keeping you alive. You cant deny ... That when I left your mouth - you Have already forgotten our simple life... I felt that ... Just a sigh --- you let me go lighter than air. I'm completely gone from your mind, You breathe me out - you let me go Lighter than air - just dont sigh... Siiigh