The 25 year-old was reported to have proposed to him during a drunken karaoke night before forgotting the next day.
However the Welsh star has now denied the claims and said she wasn't even there that night.
According to the MailOnline, she said in a statement: 'This story is a complete fabrication. I have not proposed to my boyfriend, drunkenly or otherwise.
'It is embarrassing for me (and him) for our families and friends to read that I have. I was not in the pub they mention on the night they allege this happened. I haven't been there for five months.
'At the time that I was apparently drunkenly proposing I was in fact performing in a completely different town with a large public audience. There is literally not one shred of truth in this story.'