Yeah Peanut he has. There is a song on his Vertical Man CD/LP called 'I'm Yours' that he directly wrote for his current wife Barbara. With lyrics like... Barbara, I love you I want you, I need you. Your heart's so big Your soul's so deep Your forgiving love so strong. Leaves little to doubt who the song is written for. Don't cha think?
I'd imagine there are probably a few others he has written for the love of his life too.
"You wanna save humanity, but, it's people that you just can't stand"