Can these love survive? Opposites do attract, but that doesn't mean they can stand each other once the novelty goes. Experts say only certain odd combos work--here's the scoop on them.(TOTALLY COSMO)

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HOW TO BEAT THE ODDS

Obviously, guys in their 20s do settle down (Ashton, Nick Cannon)--it just may take him a while to get comfortable with monogamy and not feel rushed into things. If you're game to play it patiently, you'll likely appreciate his sense of fun, his sense of adventure, his energy (especially in the sack), and how unjaded he is.

Play up his talents, whether it's his encyclopedic knowledge of current events or his amazing ability to work magic with absolutely anything electronic. Then rely on his skills by asking him for help in those specific areas. When you let him prove how useful he is, he'll internalize that you need him and see himself as a strong partner.

Sate your social-butterfly tendencies with your friends, and bring him only to the most important events. And when he does come out, don't ditch him for the dance floor--make a point to introduce him to people and point out what they have in common, since introverts feel comfortable only when they're making a one-on-one connection.

Making the effort to RSVP yes to things will demonstrate that he matters to you. Just ask him to prep you on people's basics (their jobs, hobbies, passions, whatever) ahead of time. You'll feel better steeled to make small talk (even if you don't join the conga line). And suggest easy double dates with his pals whom you know you like.

D vs. R Political opposites tend to be good communicators since they're used to discussing their differences.