Is Hayden Rebounding With Mark Sanchez?

RumorFix has exclusively obtained the first pictures of rumored celebrity couple Hayden Panettiere and New York Jets quarterback Mark Sanchez.

The Heroes star broke up just over two weeks ago with heavyweight boxing champ Wladimir Klitschko and was photographed with the New York stud on Memorial Day at an In-N-Out Burger in Laguna Hills, California.

Eyewitnesses tell RumorFix that Hayden and Mark walked in together to the hamburger joint along with another couple. They ordered their food together-- Mark paid.

"They seemed very close and very happy," and eyewitness tells us. When they walked out of the fast food restaurant, Mark was flashing a huge smile.

Just last week, the TV star was photographed with a mystery man twice in one week, but as our source told us, "nothing to it."

As for Hayden and Mark, a source close to Hayden tells us, "they are just friends."

Credit: Rumor Fix

In or Out: Hayden Panettiere in Julien MacDonald

She's come undone.

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Hayden, Wladimir Klitschko Premiere 'Klitschko'

Making the most of their time at the 2011 Tribeca Film Festival, Hayden Panettiere and Wladimir Klitschko were spotted at the premiere of “Klitschko” last night (April 24).

The “Heroes” hottie and her boxing beau both looked to be having a marvelous time as they posed for the paparazzi outside the SVA Theater in New York City.

Credit: Celebrity Gossip

Hayden Panettiere: How I Have Sex With Tall BF

No boundaries for Hayden Panettiere's fans!

During her Tuesday appearance on The Ellen DeGeneres Show, the Scream 4 star opened up about the very personal question curious folks ask most--regarding her much taller Ukranian heavyweight boxer boyfriend Wladimir Klitschko.

"He is quite a bit bigger than me," the 5'1" starlet, 21, said of her 6'6" beau, 35.

"I get the prudest people coming up to me and they're like, 'Does it work?' Yeah, it works. We find a way," the Heroes alum said.

DeGeneres, 53, couldn't believe fans would ask Panettiere about her sex life. "I know what you're talking about, but I'm in shock!"

"Where there is a will, there is a way!" Panettiere quipped about sex with Klitschko. She began dating Klitschko after her February 2009 breakup with her 33-year-old Heroes co-star Milo Ventimiglia.

"[The people who ask me how sex works with my boyfriend] are very conservative people most of the time but that just have to know," she explained. "Like, 'I have to know, I just have to ask you this question. I'm really sorry but…'"

DeGeneres said such personal questions were "crazy and rude," but Panettiere defended the TMI-queries: "I don't mind it."

Credit: Us Magazine

"Scream 4" Hollywood Premiere - Red Carpet

Neve Campbell, Courteney Cox, and David Arquette arrive at the premiere of The Weinstein Company's "Scream 4" held at Grauman's Chinese Theatre on April 11, 2011 in Hollywood, California. 

Also at the premiere were Shenae Grimes, Kristen Bell, Aimee Teegarden, Hayden Panettiere, Emma Roberts, and Lucy Hale - who are all in the film as well.

Credit: Zimbio

Photos by Getty Images North America