Playboy fans were surprised when their infamous bachelor founder, Hugh Hefner, announced that he was finally settling down with his lady love, Crystal Harris — but none were more shocked than one of Hef’s former girlfriends, Kendra Wilkinson. “We all thought it was going to be Holly!” Kendra tells In Touch of her former Girls Next Door co-star and Hef’s one-time No. 1 companion, Holly Madison, who split from the 84-year-old in 2008 amidst reports of his refusal to commit. The Kendra reality star, who was in Culver City, Calif., meeting with fans at her signing for Ab Cuts revoluntionarylifestyle.com, on January 12, believes the octogenarian simply wasn’t mature enough to tie the knot back when he and Holly dated. “He’s like any man — he was having fun and wasn’t ready. I guess he was too young!” she said. Hef, who has been married twice, proposed to 24-year-old Playboy model Crystal on Christmas. Meanwhile, Holly didn’t try to hide her disapproval of her ex’s wedding plans while promoting the second season of her E! reality show, Holly’s World, in LA. “She doesn’t really have a personality that pops out very much,” she told In Touch of Crystal.