Ariana Grande talking about 'marriage' with boyfriend Mac Miller as she believes he's 'the one'

If rumours are to be believed, Ariana Grande is planning her nuptials with new boyfriend Mac Miller within months of dating.

According to Hollywood Life, the music couple – who first made headlines in August for their cosy dinner date in Los Angeles – seems to be fast-tracking their romance as the Dangerous Woman hitmaker may have found "the one".

"They talk about marriage all the time with each other, almost to the point where friends are rolling their eyes over it," a source told the gossip website shedding light on the growing romance between the new couple.

The report further went on to claim that the 23-year-old singer has fallen head over heels in love with Miller as they enjoy the "honeymoon stage".

"The honeymoon stage they're in is pretty much at full throttle right now," the source added.

"Ariana believes that Mac is the one and if she doesn't eventually marry him, that any future relationship would be a bust," the insider added about the two in the latest report.

Grande and Miller's relationship came into the public when the singer duo flaunted PDA during their LA night-out as they were spotted kissing and holding hands.

However, Grande gave off a rather cold vibe when she was prodded about her affair with the Fight The Feeling singer on Ryan Seacrest's show. "If I post something, that's what I'm willing to share at the moment. That doesn't mean you, Ryan Seacrest with millions of listeners, are entitled to more information," she said shutting down the host and his enquiries.

Before dating Miller, the pop star ended her one-year-long relationship with Ricky Alvarez in July.