Jessie James Decker and Eric Decker
The 26-year-old country singer and her New York Jets wide receiver hubby shared an intimate moment on Instagram. "Tasty," James Decker wrote. Next time, keep it to yourself! Click here for more celebrity PDA moments.
Steven Tyler and a fan
The Aerosmith singer rocked a fan's world when he leaned in for a smooch. Click here for more pictures of Tyler on X17online.com.
Barbara Walters and Sheryl Crow
It was just a (very) friendly hello, but this shot of Walters planting a smooch on the crooner sure made its rounds on the Internet.
See more photos of Sheryl at X17online.com.
Lady Gaga and Mayor Bloomberg
Being mayor has its perks. Mike got lucky as the clock struck midnight in Times Square on New Year's Day, and we got an image we'll unfortunately never be able to get out of our heads.
Alec Baldwin and Hilaria Thomas
Alec seduced his wife during a photo call for the film "Seduced and Abandoned" at the 2013 Cannes Film Festival, proving that some moments are better kept behind the scenes.
Betty White and Alex Pettyfer
The 23-year-old "Magic Mike" actor couldn't resist the 91-year-old star's charm at the 2013 GLAAD Media Awards, and Cloris Leachman bid $8,000 for a kiss from her. Get it, Betty!
Zac Efron and Halston Sage
It looks like Zac and Halston had no problem getting into character for this lip-locking scene while filming "The Townies." They seemed so enthralled, we're wondering if they even stopped when the director yelled, "cut!"
See more photos of Zac at X17online.com.
Nicholas Cage and Alice Kim
Cameras were able to get just a little too up close and personal during Nic and Alice's intimate moment at the 2013 Venice Film Festival. Not now, guys!
Benji Madden and Hedi Gores
Benji Madden may have initiated a kiss with girlfriend Hedi Gores while out and about in Hollywood, but Hedi went in for the kill, wrapping her hands around his tattooed neck and tackling that burly beard like there was no tomorrow.
We'll say it again: eww.
See more photos of Benji and Hedi at X17online.com.
LeAnn Rimes and Eddie Cibrian
Neither the kids nor Eddie's ex, Brandi Glanville, watching could stop these two from making out at a soccer game in Calabasas. Brandi reportedly left early, and we can understand why.
See more photos of LeAnn and Eddie at X17online.com.
Uma Thurman and Arpad Busson
The 43-year-old actress and her shirtless 50-year-old boyfriend acted like a couple of kids aboard their very own love boat in Saint Tropez.
See more photos of Uma at X17online.com.
Nicole Kidman and Keith Urban
The tall actress and her not-so-tall singer hubby couldn't keep their hands off each other at the 2013 Cannes Film Festival.
Brittany Daniel and Keenan Ivory Wayans
Ready, set, action! The actress and director weren't rehearsing a steamy movie scene by the pool, but it looks like they were practicing for later in their Miami hotel room. Next time, keep the whole thing behind closed doors, folks.
See more photos from the couple's Miami vacation at X17online.com.
Michelle Hunziker and Tomaso Trussardi
The Swiss TV personality was very pregnant during her vacation in Forte dei Marmi, Italy with her Italian baby daddy (who happens to be one of the heirs to the Trussardi fashion house). But her bump didn't stop her from wearing an itsy bitsy bikini, or engaging in some serious PDA.
See more photos of Michelle and Tomaso at X17online.com.
Get a room! Celebrity couples seem to forget the cameras are watching when the mood strikes. Ah, to be famous and in love. Here are some public displays of affection that we wish we hadn't seen.