Now Jonathan, 27, is a huge star in the US after overcoming depression and having his life βsavedβ by Simon Cowellβs talent show.
The talented singer lost four stone in weight after turning his life around β and now looks totally different.
Jonathan finished second place in the sixth series of the ITV show with his singing partner Charlotte Jaconelli.
They were beaten to the prize by performing dog act Ashleigh and Pudsey.
Jonathan and Charlotte soon recorded their first album, Together, for Simon Cowellβs label Syco, andΒ it reached Noβ5 in the British charts.
Thriving on the success, Jonathan ended up dropping from 20st to 16st.
He said: βI signed up withΒ WeightWatchers last year, but I didnβt take it seriously until this April β now Iβve lost 4st.
βI never felt pressure to lose weight from people in the music industry but I wanted to do it for myself. I feel much better within myself and will keep going.