Can you not break my heart?

You said you had to leave...I begged you to stay..in the end I finally said ok but asked you if i can have my heart back cos you stole it from me...You said you'll keep it cos it's your sweetest memory of me...I told you to pls take care of my heart and you said ok...But how do I know that you won't just break it and throw it away? Can I really trust you not to break it? Not to forget me and how much we mean to each other? Keep catching raindrops so you can show me how much I mean to you...