ET is behind the scenes at the "Survivor" finale, where PARVATI SHALLOW talks about her big win!

Meanwhile, runner-up AMANDA says she was "very shocked" at the outcome -- but she didn't walk away empty handed! Amanda left the show with a new romance. She and OZZY are officially dating!

"He's great," Amanda says, adding that if her decision to stick with him cost her the $1 million prize, "it was worth it."