When it comes to onscreen couples, chemistry is everything. We've selected the top ten pairs we thougt knocked it out of the park in 2013. One lucky fan will win a special prize of lingerie from 3Wishes. To vote, scroll through the Facebook posts below and "like" your favorite couple. For extra entries, complete the steps in the widget at the bottom of the page! The winner will be randomly selected, so vote to enter the contest! Voting ends on December 22nd.