Jaime WinstoneWe do love a good marital riddle.

And now thanks to Lily Allen, we've been landed with one.

The singer put her foot in it big-time at the GQ awards...

She let slip some chat that her brother Alfie and his girlfriend Jaime just might have wanted to keep under wraps.

First-off, Lils got tongues wagging by calling Jaime on to the stage, saying: "Introducing my soon-to-be sister-in-law Jaime Winstone."

She then implored Jaime to "show off your rock, show off your diamond", before expressing shock that her bro's beau wasn't actually wearing a ring.

Jaime responded reluctantly to Lily's chat, which only aroused our suspicions further.Alfie Allen and Jaime Winstone

So has Alfie actually popped the question to Jaime, and they're trying to keep it hushed up?

Or is this all a storm in a teacup - courtesy of Ms Allen, who, by all accounts was a bit rowdy at the ceremony?

A inside source quoted at The Mirror claims the engagement is a go-ahead, saying:

"Jaime is thrilled he has proposed. It is no secret they have had quite a rocky relationship but all couples go through difficult patches."

However, until we see a ring or hear some more official chat, we're gonna wait and see.