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23rd April 2015
08:37pm BST
The 27-year-old was accompanied by girlfriend Lydia Bright for the occasion and told Now! magazine that their brief split was the inspiration for getting his life back on track.
"I went to rehab for my low self-esteem issues and being in recovery meant I had to change my whole lifestyle," he said.
"It wasn't just learning about my problems - it was learning to love myself. Now I know if you eat rubbish, you feel like rubbish. It's a vicious circle and it brings you down."
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