In the spirit of humour, the performer asked for the hand of his American actress girlfriend during a live broadcast on a Australian radio show, a move that apparently even got his mother believing it was a serious gesture.

But Williams has now squashed the rumours by posting a short text on his official blog. The message reads that the couple is not engaged.

But the mother of former the Take That star reported on Radio 5 Live she had been looking for an engagement card, adding she was pleased for him and her daughter-in-law to be.

Rumours flew the moment Williams proposed to Ms Field during a live broadcast of 2Day FM in Sydney. The singer even had gotten his hands on a makeshift engagement ring which he borrowed from Jackie O, the show’s host.

Williams calmly asked “Will you marry me?” with the obligatory “I love you so much” at the radio show.

The actress answered affirmatively, saying she’d love to be his betrothed for the rest of her life.

Taking everyone by surprise, Williams was immediately given a “froggie” ring by the radio host to use as a pretend prop. Williams then proceeded to put on the ring on his girlfriend’s finger.

The surprise on-air proposal left many wondering if the singer was serious.

Hi agents back in the UK were quick to comment the “play” proposal and said that although he had popped the question, he had done it as a joke.

The pop star’s mother fuelled the speculations by saying her son had revealed his intentions about a week prior to the airing of the Australian radio show, saying it wouldn’t a surprise since the pair have been together for 3 years now.

After spending a few years in hiatus, Williams has now been reacquainted with spotlight particularly in the UK. Alongside the girlfriend-engagement antics, Robbie has recently released a new album, “Reality Killed the Video Star”, and has confirmed reunion rumours with the rest of the guys in Take That, his career launching boy-band.