“Jen is trying to put on a bold front, insisting that there was never a great romance between them,’ says a source close to the duo. “But what’s really bugging her is that people will start calling her ‘Poor Jen’ again. That’s why she got her publicist and Courtney Cox Arquette to deny that she and Vince were ever engaged. She’s desperate to downplay their relationship.�?

A source tells Star, “Vince got tired of her going back and forth about marrying him, so he essentially told Jen he wants to cool down the relationship.�?

Last week, Vince Vaughn and Jennifer Aniston acted out a spoof bust-up during their video-link acceptance
speech for their Teen Choice Movie Chemistry.

Vince began by saying: "We just want to thank all the voters out there who
put us up for this award. When you are dealing with on screen chemistry, it
isn't an equitable kind of thing..."
Jennifer then interrupted, saying: "It's not something that happens. It's
something, you know..."
Vince then jumped in jokingly complaining: "I guess part of having chemistry
is having someone cutting in the middle of a sentence."