It was written and produced by Stock Aitken Waterman and became another UK Top 10 hit for him, peaking at #3.. Track listing. But I just don't have the heart I just don't have the heart to tell you It's such a shame That it's ended this way But I just don't have the heart I just don't have the heart to tell you Ooh but I just don't have the heart I just don't have the heart to tell you. If I stopped to think about The good times that we … U.K. Single "I Just Don't Have the Heart" (3:27) "I Just Don't Have the Heart" is the second single from British singer Cliff Richard's 1989 album Stronger.