Miss USA Susie Castillo — who is no relation to Santa Barbara's Cruz Castillo — became engaged to longtime boyfriend Matthew Leslie on Monday's On-Air with Ryan Seacrest. Leslie shocked Castillo when he got down on bended knee during the show and presented her with a diamond-and-pink-sapphire ring. "Everybody started screaming," Castillo told The Associated Press. "All the 51 Miss USA delegates were right behind us. They were crying. I was shaking."