But for some celebrity couples, that private sweet love turns into an over-the-top PDA that may -- or may not -- make you want to shield your eyes.
Here now are seven of the most affectionate famous duos that simply can't keep their hands off each other. Warning: They may just make you a little lovesick too.
1. Kim Kardashian and Kanye West
We've seen their extravagant public displays of love to each other on many occasions. You know, like that time Kim rented out the Staples Center for Kanye's 38th birthday or when the rapper rented out San Francisco's AT&T Park for his proposal. But these two definitely don't limit their expressions of love to the inside of stadiums and arenas.
The reality star once used Instagram to share not only how she kisses, but how she even licks Kanye's face.
Yeezus! These two are macking on each other just about everywhere they go together.
July 5 will mark their one-year wedding anniversary, but Jessica and Eric are still in newlywed bliss. Jessica shared that her former NFL player husband recreated scenes fromFifty Shades of Grey scenes with her for Valentine's Day.
The "Irresistible" singer captioned the risqué pics a caption with the hashtag, #FIFTYSHADESOF JOHNSON.
The only shades we need are the ones to protect our eyes from seeing so much of this love!
Jada and Will have been married since 1997, but they don't shy away from talking about their love. At the Focus premiere, the actor planted kisses on his wife's neck and spoke about their marriage to ET.
"We've survived. That's the thing that's difficult, that people don't understand about love, you think it's all flowers and everything. But love gets created by making it together," Will said.
And the Magic Mike XXL actress shared that created love by posting a pic that Will took from their bedroom on Facebook.
"I discovered the sexiest secret the other day," the actress wrote. "My husband takes pics of me in my sleep."
Talk about knowing what goes on behind closed doors!
At the recent 2015 Women in Film Crystal + Lucy Awards in Los Angeles , the country singer wouldn't let go of his wife's hand and told ET, "I'm chasing her all the time. That's the way it should be."
It's also not surprising that he writes her love letters or that he married her after dating for only one month when you see how he kisses her on red carpets. Regardless of the weather, these two can't be stopped from a PDA moment.
What's a little rain when you can kiss under an umbrella?
"We don't mind showing off our bodies - we just feel like there's no problem being natural and nude when you're with the right photographer and it's done the right way," Legend told ET about their recent DuJour photoshoot. We weren't shy about it."