There is plenty of chatter that the couple was first a mentor/mentee relationship between the uber successful Stewart and the fledgling rookie Zemken.
As many of these speculative romances go, rumors of their demise are as quick and seemingly viable as their start.
Stewart issued a public apology to Pattinson, but the couple split after the incident.
Following the controversy, Stewart has been involved in relationships with a number of women, including film producer Alicia Cargile and French singer Soko.
Zemken is a 28 year old, Sprint Cup and World Of Outlaw driver who also attended Hudson Valley Community College.
It’s not entirely clear how long the two were together, as the official start to their relationship is likely blurred.
The film’s worldwide success turned Stewart into a global superstar, whose fame continued to rise with each of the subsequent installments, “New Moon,” “Eclipse,” “Breaking Dawn – Part 1,” and Breaking Dawn – Part 2.” Stewart began dating “Twilight” co-star Pattinson after meeting on the set of the film in 2008.
The couple kept their relationship very private, but they were forced into the spotlight after photos emerged in 2012 of the actress kissing her “Snow White and the Huntsman” director, Rupert Sanders. It's a crisp night at the Phoenix International Raceway, and Stewart's No.20 Home Depot Toyota — "Rides like a soapy dishrag! He stays in resorts and stuff like that on race weekend.Her first major movie role came in 2002’s “Panic Room,” alongside Jodie Foster.She scored her first starring role at age 14 in the children’s action-comedy “Catch That Kid.” After a number of other big screen appearances, including the films “Zathura,” “The Messengers” and “In the Land of Women,” Stewart was cast as Bella Swan in the film adaptation of Stephenie Meyer’s best-selling young adult novel, “Twilight,” opposite Robert Pattinson and Taylor Lautner."He's been an asshole at times." Stewart barges into the mobile office at the back of the Home Depot hauler where Greg Zipadelli, the only NASCAR crew chief he's ever had, is waiting to debrief him. As we take off over the Phoenix Speedway, Stewart opens a box containing piping-hot Papa John's pizza and takes a slice. At a time when the .5 billion industry of NASCAR has corporatized and spawned a generation of technically gifted, clean-cut racers like Johnson and Jeff Gordon, Stewart — or "Smoke," as he's called in the back rooms — is a throwback to racing's older era of bootleggers and brawlers. "Tony represents what made this sport," says Hunter. Recently, Stewart dropped a bombshell when he announced he was leaving his employer, the deep-pocketed Joe Gibbs Racing, to start his own team in 2009.