In honor of Valentine's Day (and also in honor of ourtotally healthy obsession with celebrities), we got to thinking about ourfavorite celebrity couples of the past. Most of these celebs are now in new,happy relationships (which we totally support!), but you know how it is -- Valentine'sDay has a tendency to make people feel nostalgic. So here's a look at some famousHollywood couples who were so awesome together that we wish they were still anitem.

Related article: Katy Perry Jabs at Russell Brand at the Grammys!

Zac Efron & Vanessa Hudgens

Zac Efron and Vanessa Hudgens smiling at each other on the red carpet of the 2010 MTV Movie Awards

When they dated: 2006-2010 

Why they were perfect for each other: Any relationshipthat involves singing and dancing has gotta be good, right? From the moment thesetwo teen heartthrobs met on the set of HighSchool Musical, it was love -- and unlike many other celebrity couples, theywere never shy about talking about their feelings for each other. Hudgens wasonce quoted as saying, "Right off the bat, we had a connection. I thinkeverybody could see it." We could, Vanessa! We so could!

 

Ryan Gosling & Rachel McAdams

Ryan Gosling and Rachel McAdams on the red carpet of the 2007 Critics Choice Awards

When they dated: 2004-2007

Why they were perfect for each other: They met on the setof probably the most romantic movie ever made -- The Notebook. As the world watched their characters, Noah and Allie,fall in love onscreen, we fell in love with Ryan and Rachel off-screen. Becausecome on, even the best actors in the world can't fake that kind of chemistry.

 

Jake Gyllenhaal & Reese Witherspoon

Jake Gyllenhaal and Reese Witherspoon Smilling At Each Other

When they dated: 2007-2009

Why they were perfect for each other: They're both justso adorable. And they would make ridiculouslyadorable babies. And to further add to the adorableness, Reese told InStyle magazine that she and Jake usedto spend their weekends at her farmhouse where they hung out with chickens andgrew their own vegetables. Awww.

 

Drew Barrymore & Justin Long

Drew Barrymore and Justin Long at the 2010 LA Premiere of Going the Distance

When they dated: On and off from 2007-2010

Why they were perfect for each other: They're bothincredibly cool and laid-back. Justin and Drew's unique chemistry came through loudand clear in their 2010 romantic comedy Goingthe Distance -- you could totally tell that they laughed a lot and had alot of fun together, which is one of the most important things in arelationship.

 

Justin Timberlake & Britney Spears

Justin Timberlake and Britney Spears Holding Hands

When they dated: 1999-2002

Why they were perfect for each other: They had everythingin common! They were two of the sexiest and most famous pop stars of the Y2K era,they came from small-town upbringings, they were on the Mickey Mouse Club as kids,and they swore up and down that they were virgins! It was just too perfect,even though that last thing was totally a lie.

 

Jessica Simpson & Nick Lachey

Jessica Simpson and Nick Lachey on the Red Carpet of the 2004 American Music Awards

When they were together: Dated from 1999-2002 and weremarried from 2002-2005.

Why they were perfect for each other: Let's be real. Not toomany guys would stay in a relationship for three years without having sex. Butthat's what Nick did, because Jessica wanted to remain a virgin until herwedding night. If that's not true love, I don't know what is. Plus, theirreality show Newlyweds was sohilariously awesome that we want these two back together just so they couldbring their show back!

 

J. Lo & Diddy

Jennifer Lopez and Sean Combs Smiling at Dinner Together

When they dated: 1999-2001

Why they were perfect for each other: He wasn't fooled by the rocks that she got! Jennifer Lopez andSean Combs were such an unlikely match that we couldn't help but be completelyfascinated by their 17-month-long relationship. Despite rumors that Combs wasunfaithful, the couple never seemed anything but happy together when they werein the public eye. But after Diddy was involved in a nightclub shooting in2001, Lopez bailed. Probably a wise choice, though we miss all the salaciousdrama!

 

Winona Ryder & Johnny Depp

Winona Ryder in a black dress and Johnny Depp in a mustard-colored suit

When they dated: 1989-1993

Why they were perfect for each other: They were thequintessential Hollywood couple of the '80s -- beautiful, famous, and totallyweird. Ryder and Depp were engaged for three years before calling it quits andduring their relationship, Depp got a tattoo on his arm that said, "WinonaForever." After they broke up, he had it changed to "Wino Forever."And hence the world learned a valuable lesson: while love may not last forever,tattoos do.

Who are your favorite celebrity couples from yesteryear?

Photos courtesy of Pacific Coast News