Could wedding bells be on the cards for Girls Aloud stunner Nadine Coyle and on/off beau Jesse Metcalfe?

The singer has been coy about her rumoured reunion with the Desperate Housewives hunk but was less shy when it came to showing off her new sparkler at the band’s show at G.A.Y (see pictures here) over the weekend, according to an eyewitness.

A mole tells the Daily Star: “…in a quiet moment before the girls took to the stage she showed her bandmates a ring on her finger. I couldn’t see which finger as they were huddled around.

“She then asked an assistant to lock it away before they took to the stage because she didn’t want anyone to see it or, more importantly, to lose it.”

Jesse was recently seen checking out rings in London’s diamond quarter in Hatton Garden, adding fuel to the engagement rumours.

Another spy says: “He said he was looking for a friendship ring, but he was checking out diamond solitaire job, exactly the type you’d pick for an engagement.”

To see pictures of Jesse and Nadine's reunion, click here!