Robert Pattinson & Kristen Stewart
Nickname: Robsten
Together Since: Filming of the first Twilight flick, though plenty of people are just now realizing
Sex Rating: The utter pinnacle of all vamp couples—young, passionate and sinful
Outlook: They've weathered a lot of hardships and are still going strong—looks good!
Anna Paquin & Stephen Moyer
Nickname: PaqMo
Together Since: Auditioning for True Blood
Sex Rating: Totally hot, and it certainly helps that they both frequently go at it sans clothing on their show!
Outlook: Engaged, and we don't think this'll be some in-and-out quickie H'wood marriage
Alexander Skarsgård & Evan Rachel Wood
Nickname: Skarswood
Together Since: Meeting on set for EVR's True Blood guest appearance
Sex Rating: Uneven, until we saw that superhot, toothy smooch on the season finale
Outlook: They'll both be biting other people's necks before the end of the year
Nikki Reed & Paris Latsis
Nickname: Niksis
Together Since: the beginning of '09
Sex Rating: Meh, doesn't help that Latsis is Paris Hilton's ex
Outlook: We wouldn't be surprised if Latsis hits the New Moon red carpet and goes AWOL the next day
Kellan Lutz & AnnaLynne McCord
Nickname: LutzLynne or Kellanna
Together Since: Uh, not anymore, although they've been spotted together since their breakup
Sex Rating: Pretty damn doable, too bad it didn't work out
Outlook: We think these smokin' kids will get back together—for a night of fun, nothing long-lasting
Taylor Lautner & Taylor Swift
Nickname: Taylor Squared
Together Since: Not technically together, but they played a couple in the movie Valentine's Day
Sex Rating: Less steamy than the others on this list, only because they're both still teenagers
Outlook: They're both too adorable not to eventually get together
Ashley Greene & Ian Somerhalder
Nickname: Greenehalder
Together Since: Not any longer, but they were supposedly dating in April of this year, though Ash has publicly said otherwise
Sex Rating: Two hotties from different vampire shows hooking up? We're sorry this didn't last longer
Outlook: If Ian's Vampire Diaries is a hit, expect him to not be single for much longer. Besides, Ashley's been busying herself with some other men...
Ashley Greene & Jackson Rathbone
Nickname: Ashbone
Together Since: On and off throughout Twilight filming
Sex Rating: Robsten Jr. is obviously good by us; we hope these two hotties rekindle
Outlook: Expect them to get together for real again at some point, but we're not sure how seriously they could date
Ashley Greene & Chace Crawford
Nickname: Greenecraw
Together Since: Lip-locking after the Teen Choice Awards in August, and a few times prior
Sex Rating: Delicious, and way to search outside the Gossip Girl cast, Chace!
Outlook: Looks like this is just a sorta-fling when they're both in town