The star, who plays werewolf Jacob Black in the films, said the release of The Twilight Saga: Breaking Dawn - Part 2 was a milestone in his life.
"Seriously, there are so many emotions going on inside of me right now," he explained. "I don't know if I say 'sad'. I don't know if I say 'excited'. There are so many things. It's a weird feeling."
And when we asked him if he had any advice for a new actor playing Jacob if the films were "rebooted", he was upbeat.
"I'll say 'have fun', because this character has been unreal to me... Truly, I can't imagine a cooler character to play over the past few years. Have fun with it and enjoy it."
The final movie adaptation of Stephanie Meyer's vampire books stormed to the top of the US box office over the weekend.
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