Keira's ex sings of heartbreak

Keira Knightley's ex-boyfriend Jamie Dornan has written a song about her. On why their relationship failed, he says, "I was intimidated by certain things that came with her fame and I began to feel out of my depth. It's still hard to talk about." He says song helped him cope with the heartache of the split. "The song hurts so much when I sing it. I'm in so much pain afterwards. It's about the difficult times in a relationship in a relationship, everyone has them - I still speak to Keira. We were so in love."

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