The usual grain of salt in tact, enjoy this account of a blissful night of romping with the latest man to wander away from dear Jen Aniston. The 'lucky' girls blog can be found here. The Stars full report at the jump.

The group proceeded to have a cocktail-fueled evening that ended with Vaughn and Lane (who goes by her middle name of Mallory) in bed together -- all of it documented in an e-mail entitled, "I shacked with Vince Vaughn" that Lane sent to 22 of her Gamma sorority sisters two days later, says a source!

Laura Mallory Lane Jennifer Aniston and Vince Vaughn had not split up before Thanksgiving. In fact, the former Friend tried to convince her on-again, off-again boyfriend to make the 12-hour flight from London (where he's been filming the comedy Fred Claus) to L.A., to join Jen for the holiday. When he turned her down, she ended up alone joining best friend Courteney Cox-Arquette and hubby David Arquette.

As for Vince, he hopped a three-and-a-half-hour flight to Budapest. On Nov. 25, while dining in a local restaurant with two pals, Vince befriended three female students at a nearby table -- including Laura Mallory Lane, 20, a junior at Trinity University in San Antonio, Texas, who was on holiday while studying abroad in Rome.

HOTEL-BOUND
The group proceeded to have a cocktail-fueled evening that ended with Vaughn and Lane (who goes by her middle name of Mallory) in bed together -- all of it documented in an e-mail entitled, "I shacked with Vince Vaughn" that Lane sent to 22 of her Gamma sorority sisters two days later, says a source!

When the bars had closed at 2 a.m., Mallory wrote that the group ventured back to Vaughn's hotel and Vaughn asked her to stay for another drink -- which she did. "I did not feel pressured at all," Mallory wrote.

"We talked some more (and yes, we talked about Jen), and one thing led to another and obviously we were messing around before too long. We didn't have sex, but it was just as good :)..."

Nevertheless, it obviously wasn't a good thing for Jen and Vince's romance. Star alerted Vince's reps to our story and lo and behold the couple announced their final breakup!