Chemistry Lesson: The Hottest Onscreen Couples

From Rob Pattinson & Reese Witherspoon in Water for Elephants to Brad & Angelina, see the big screen's most sizzling duos (20 Photos)

Nisha Gopalan on Apr 22, 2011 at 3:56AM

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Chemistry Lesson: The Hottest Onscreen Couples

David James/ Twentieth Century Fox

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Robert Pattinson and Reese Witherspoon
'Water for Elephants'

This may be hard to hear, Twihards, but Robert Pattinson and Reese Witherspoon's star-crossed love affair in Water for Elephants just might give the Edward-Bella Twilight Saga romance a run for its money. As a veterinary student in search of a little circa-1930s adventure, R-Pattz joins a traveling circus and falls head-over-heels for the show's gorgeous star (Witherspoon, naturally). The one tiny kink: She's married to the circus' volatile animal trainer (Christoph Waltz), who isn't as enthused about their burgeoning love as the rest of us. Even if you're among those who think Kristen Stewart is Rob's one and only (both on screen and off), you have to admit that Pattinson and Witherspoon make quite the dashing pair. Just look at the longing in their eyes!

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