Is Jessica Simpson's fledgling romance with Tony Romo set to warp speed? In Touch claims the unlucky-in-love starlet, who reportedly introduced the Dallas Cowboys quarterback to her grandparents over Thanksgiving weekend, recently met his folks.

"The meeting went well, and she had a great time with them," an insider tells the mag (via Perez Hilton). "His parents seemed to really like her."

And just in case there was any doubt about the depth of Simpson's schmoopy feelings for her squeeze of barely a month, the source helpfully shares, "She's falling completely in love with him."

While Jessica is said to have her matchmaking dad-manager-string-puller Joe Simpson to thank for her hookup with Romo, there are whispers her little sister Ashlee is having some daddy issues over her beau, Pete Wentz.

Ashlee Simpson and Pete Wentz at the Hollywood Life Style Awards in Los Angeles on Oct. 7

Star claims Joe banned the coif-impaired Fall Out Boy front man from the family's Christmas gathering partly because of an interview he gave earlier this year in which he confessed to being a "make-out king" who's smooched girls and boys.

"Joe was skeptical about the relationship from the start," alleges a source, adding that Ashlee is "upset" by the rejection, but "she values her dad's opinions and has agreed."

Nuh-uh, proclaims Pete, who insists there's been no Scrooge-like freeze-out from the Simpson clan's holiday festivities.

"I think Joe gets a really bad rap in the press. He's always been nothing but nice to me," Wentz avows to MTV News. "He even called me to let me know he expects me to show up for Christmas. So there's no truth to that [rumor]."

In related rumor denial news, Jessica is putting the kibosh on whispers that she freaked out on pal Eva Longoria because she recently chatted up her ex, John Mayer, at a Manhattan hot spot, reports the New York Post.

"When Jessica heard that Eva was being friendly and polite to John, she called her a back-stabber and was furious," tattled a snitch.

But Simpson's rep maintains she's as tight as ever with her "Desperate Housewives" chum, telling the paper, "There's no truth to Jessica being upset with Eva Longoria. They are great friends."

Speaking of Mayer, he says he has no regrets about his recent admission to Ricki Lake over how he spent his childhood dreamily watching her deal with dysfunctional people on the small screen.

"When you meet someone that you've had a crush on when you were a kid, you go, 'Hey! I've had a huge crush on you since I was a kid!'" the Casanova crooner comments to "Access Hollywood."

But he says a subsequent New York Post item made too much out of their confab.

"I'm not gonna go up to a woman and mess with her head," explains Mayer. "I got no problem saying to someone I got a crush and I'll say it again to the next person I had a crush on since I was a kid ... I'm not gonna let some stupid Page Six story make me not want to live my life anymore."

As for Lake, who already downplayed the encounter to Howard Stern, she swoons to "Access," "I can't imagine anything more flattering to me at this point in my life than John Mayer telling me he has a crush on me. He's a wonderful guy."

Next: Celeb Good Deeds, With Adam, Paris (!) & Gwen?