Jennifer Aniston is relying on the support of her partner Vince Vaughn after her father reportedly suffered a heart attack. 73-year-old John Aniston was rushed to hospital after collapsing at home and there are grave concerns about his condition. Jen raced straight to the hospital when she heard the news and Vince wasn’t far behind her and both stars cancelled all appointments to be near Jen’s stepmother Sherry, fearing the worst. An insider says `It was a scary few hours for them, you could see that the day took Jennifer to the emotional brink and that it would have been a lot harder without Vince. He is clearly the rock she can lean on.