Us Weekly has confirmed that Vince Vaughn, 36, has popped the question to his girlfriend of one year, Jennifer Aniston, 37. “They’re engaged!” a friend of the couple’s tells Us, adding, “Vince almost cries whenever he tells the story of the proposal.”
 
On June 27, as the couple returned home on a private Gulfstream jet to L.A. after a romantic, nine-day vacation at Girls Gone Wild founder Joe Francis’ $25 million coastal retreat near Puerto Vallarta, Mexico, the actor nervously got down on bended knee. At that moment, he asked for Aniston’s hand in marriage – with, say sources, a substantial diamond ring.
 
“He was going to propose on the beach during the trip, but he chickened out because he wasn’t sure if she would accept,” says the source. “But he knew he was leaving town [to film Into the Wild in South Dakota] for awhile, so he just felt he had to ask her before they landed.”
 
How did Jennifer react? How much did the ring cost? For more details on the proposal, and where the couple is thinking about settling long-term, check out the current issue of Us Weekly, on newsstands this week.