Vince Vaughn spent the night with Jennifer Aniston at the weekend, it has been claimed.'The Wedding Crashers' star - who split from the former 'Friends' actress in December - drove to her Hollywood Hills mansion on Saturday in his blue Pontiac Firebird convertible and stayed the night. A witness told Us Weekly magazine: "Vince didn't leave until 5pm the next day."A source close to Jennifer said: "If they hooked up that night, there is nothing wrong with it. She can trust him."A Vince source agreed: "It's no big deal if he stayed over. They are friends."In February, Vince - who dated Jennifer after her painful divorce from Brad Pitt - attended her 38th birthday party at Courteney Cox and David Arquette's home. A month later she attended his 37th birthday party at West Hollywood's Sunset Tower Hotel.'The Break-Up' co-stars allegedly split because Jennifer wanted Vince to commit to her and spend less time with his friends, but he was not ready to settle down.The couple have always said they would remain friends.