Meg Ryan is still a hard-bodied bikini bombshell at nearly 50-years-old!

PHOTOS: Meg Ryan Reveals Her Bikini Bod In Cancun

The blonde babe made a splash south of the border on Cinco de Mayo, hitting the tropical beaches of Cancun with her beau John Cougar Mellencamp and their families.

Forget 'Jack and Diane' -- Did John put a ring on Meg's finger?

RadarOnline.com’s got a brand new picture of America's sweetheart Meg Ryan, who flashed a nice piece of bling on her ring finger as she left Toronto’s Massey Hall with John Cougar Mellencamp following his concert there Thursday.

The pic was snapped as the gorgeous 49-year-old Sleepless in Seattle star and 59-year-old Indiana rocker headed for a waiting plane.

Love (and cigarette smoke) was in the air as John Cougar Mellencamp stepped out with Meg Ryan yet again, in these new photos obtained by RadarOnline.com.

PHOTOS: Meg & John Hit New York

The divorcing singer has been spending lots of time with Meg and sources confirm what Mellencamp has not – they are a couple.

In these new photos, Jack and Diane, er John and Meg, step out of a car together in New York and Meg seems enraptured by her new beau, who coolly stares ahead, with a lit cigarette in his mouth. (For the record, the singer had a heart attack in 1994 and took off more than a year).

PHOTOS: John Mellencamp With Wife Elaine And New Girlfriend Meg Ryan