Harry Styles celebrated his 22nd birthday by tweeting Taylor Swift lyrics.

Harry Styles

Harry Styles

The One Direction star's short-lived romance with the 26-year-old musician is believed to have inspired a number of her songs and to mark his birthday on Monday (01.02.16), Harry took to his Twitter account to tweet a line from Taylor's '22' from her 'Red' album.

He wrote: "I don't know about you, but I'm feeling 22."

Meanwhile, it has been claimed that Harry's rekindled romance with Kendall Jenner, 20, is on the rocks.

The couple have apparently been enjoying a long-distance romance after they vacationed together in St Barts over the New Year, but it has now been revealed that Harry isn't keen on settling down with the model.

A source shared: "They are still going to carry on as friends. Harry doesn't want to settle down so he would never get a serious girlfriend during this phase of his life... in Harry's eyes it was never anything official."

The pair had a brief fling in 2013, enjoying a string of dates before calling things off but had remained friends before their recent reconciliation.

The insider added to The Sun on Sunday newspaper: "Harry and Kendall have got back together before but, in her eyes, it's very much off at the moment and he's arguing it was never even really on."