\"It literally got to, like, 120 [mph] in four seconds,\" he added.

Johnson went on to explain her love of fast cars. \"I grew up around a lot of, a lot of dudes. And a lot of like motorcycles and cars and I like them,\" she said.

As for those steamy love scenes, Johnson said Dornan could essentially eat whatever he wanted.

\"PHOTO:
Universal Pictures
PHOTO: A scene from "Fifty Shades Freed."
>

\"It's so annoying. He truly eats whatever he wants,\" she said. \"He just will, like, jump around for 15 minutes and then, like, eat a roll of bread stuffed with, like, cheese and potato chips, and then, like, six candy bars,\" she added with a laugh. \"And then take off his shirt, and it's rude.\"


ABC Breaking News | Latest News Videos

\"Fifty Shades Freed\" hits theaters nationwide Feb. 9.

The \"20/20\" one-hour special, \"Lights, Camera, Romance,\" will air on Tuesday, Feb. 13, at 10 p.m. ET on ABC.

\"PHOTO:
ABC News
PHOTO: Dakota Johnson and Jamie Dornan sat down with ABC News to discuss their new movie "Fifty Shades Freed."
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