Miley Cyrus claims she is ''so f**king happy'' after splitting from Liam Hemsworth.

The 'Wrecking Ball' hitmaker, who confirmed she and the Australian actor had ended their engagement last week, has dismissed speculation she is putting on a brave face and is heartbroken over the demise of her four-year relationship.

The 20-year-old star tweeted on Friday night (27.09.13): ''I'm exhausted from being so fucking happy. In bed at 9:45 & it feels so good. #booksinbed''

Miley, who cried on stage at the iHeartRadio Music Festival in Las Vegas last weekend, is currently reading the best-selling novel 'The Brief Wondrous Life of Oscar Wao' by Junot Díaz and hinted that she is trying to distract herself from her relationship woes.

She wrote: ''Use your MIND to have a good time''

The petite blonde star is rumoured to be dating her producer Mike WiLL Made It but his spokesperson denied they are more than friends earlier this week, saying: ''They have been spending a lot of time together because they are working so closely together on [Miley's] album.

''[They work] closely professionally and it is all about the music.''

Meanwhile 'The Hunger Games' actor Liam, who moved the last of his belongings out of Miley's house in Toluca Lake, Los Angeles, last week, was pictured kissing Mexican actress Eiza Gonzalez just a day after he confirmed the end of his engagement.