Nathan Sykes' girlfriend is writing a track about him.

The Wanted hunk is dating US singer Ariana Grande, who has fallen head over heels for him and is planning to show her feelings in a song.

She told Notion magazine: ''You best believe I'm going to be writing about him!

''I'm always going to be as honest I want to be. Music is the greatest form of self-expression. I'm the happiest I've ever been and I'm learning a lot of lessons from this relationship.

''I think that's beautiful and it's something which should be expressed.''

The couple went public with their romance in September, angering Ariana's ex-boyfriend, Jai Brooks, who alleged she had been unfaithful with Nathan during their time together, claims she strongly denies.

She said: ''How he handled it was a bit unexpected ... those kinds of accusations being thrown at me are completely false and more than anything just hurtful and shocking.''

Ariana, 20, is not the only one planning to lift the lid on The Wanted's love life in song form, as singer Max George tells all about his failed romance with British actress Michelle Keegan in new track, 'Heartbreak Story'.

He said: ''We've written about tough experiences we've had in our lives over the years - relationship breakdowns and that sort of thing.

''I've written about my break-up with Michelle. I've written a couple of songs about it and the experiences I went through. There's one song called 'Heartbreak Story', which is definitely close to me.''

Since splitting in June 2012, Michelle has got engaged to British reality TV star Mark Wright, while Max is now dating underwear model Nina Agdal.