Be Careful, It's My Heart

Sweetheart of mine I sent you a valentine Sweetheart of mine it's more than a valentine Be careful it's my heart It's not my watch you're holding, it's my heart It's not the note I sent you that you quickly burned It's not the book I lent you that you never returned Remember it's my heart The heart with which so willingly I part It's yours to take, to keep or break But please before you start, be careful, be careful Be careful it's my heart