PDA

Ariana Grande and Ethan Slater are letting everyone get a glimpse of their mostly private relationship ... engaging in some light PDA at the NYC premiere of "Wicked" Thursday night!

The couple hit the red carpet in the Big Apple -- Ariana wearing a pink gown to match her character, Glinda, and Ethan all dressed up in a navy blue suit with a black tie.

While usually keeping some distance in public, Ariana couldn't help but wrap her arms around her man ... and he pulls her in for a tight embrace while cameras flashed.

A New York Knicks fan infiltrated a family-friendly event with some adult humor on Wednesday ... making use of his time on the kiss cam by doing something a bit, uh, different than locking lips with his significant other.

The surprising moment happened during a break in the action at the home team's matchup with the Chicago Bulls ... when the Madison Square Garden cameras focused on an apparent couple enjoying their date night.

The woman was seemingly ready to give her man a smooch ... but the dude had other plans. As she leaned in for a peck, he grabbed her head and pushed it down toward his lap -- and it doesn't take a genius to figure out the message he was trying to convey.

Britney Spears' ex Sam Asghari is not that innocent ... grabbing a handful of his potential new lady's behind while out and about in Los Angeles.

Check it out ... the fitness trainer-turned-actor is seen doing a bit of shopping on Melrose Ave with Brooke Irvine ... the realtor who Sam has been spending quite a bit of time with lately.

While neither Sam nor Brooke have commented on the status of their relationship, it appears the twosome are very much an item ... with Brit's former flame exhibiting some eyebrow-raising PDA.

Justin and Hailey Bieber attended a launch party in L.A. Wednesday night -- and the singer had his hands full with his wife -- literally!

Not exactly both hands -- but one of them as JB was photographed grabbing Hailey's butt while they exited the Rhode Skin soiree in Beverly Hills.

Rhode Skin, as you may know, is Hailey's skincare line which has also expanded to makeup -- and Mrs. Bieber was promoting her latest products at last night's event.

Cody Simpson swept his girlfriend, Emma McKeon, off to Italy for a lil' romantic vacay, and the professional swimmin' duo shared a series of sweet snaps on the 'gram ... Check out our gallery and see all the scenic shots!

Gwyneth Paltrow and Timothée Chalamet were caught smooching on the street in the Big Apple ... but TC's girlfriend, Kylie Jenner, has nothing to be jealous about ... 'cause it was only for a movie.

Gwyneth and Timothée were filming Wednesday on the set of their new sports flick, "Marty Supreme," in NYC, where the actors were seen in the throes of passion during one scene.

Check out the video ... Gwyneth, in a red gown, stands behind Timothée, in a suit and tie, attaching a necklace around his neck.

Finneas sings "1 True Love" ... but, it looks like he's got lots of kisses to go around -- smooching his guitarist during his NYC show.

The superproducer was at Warsaw Concerts, a venue in Brooklyn Saturday, jamming out for a couple hours ... when he and his guitarist got eye to eye -- sharing a sweet moment, before leaning in and locking lips.

Check out the clip ... it looks more like a playful kiss between two buddies than anything romantic -- but, still the audience goes kinda crazy for the kiss.

Brooks Nader and Gleb Savchenko are going to have a hard time denying they're dating after this ... 'cause they went to a tattoo parlor together, and couldn't stop making out while getting new ink.

The "Dancing with the Stars" partners hit up Nautilus Tattoo in Hollywood Monday night and packed on the PDA ... sucking face in front of their tattoo artists, a couple friends and photogs.

Check out the video and the photos ... Brooks is lying down on a table getting tatted up when Gleb leans down and starts French kissing her ... before smooching on her neck and whispering in her ear.

Taylor Swift and Travis Kelce proved their "Love Story" is stronger than ever ... packing on the PDA in a loving postgame visit with their parents.

The pop star attended the NFL tight end's Kansas City Chiefs game Monday evening, where the singer saw her beau's team beat the New Orleans Saints. The twosome celebrated the big win in Travis' suite postgame ... where Taylor showered her man with all sorts of love.

Check it out ... while chatting with Travis and his dad, Ed Kelce, Taylor sweetly scooped the football star up into a warm embrace. She even pulled him in for a big kiss ... clearly unafraid to pack on the PDA in front of the Kelce patriarch.

Jason and Kylie Kelce shared some adorable PDA before the new ESPN talent started his "Monday Night Football" analyst gig -- getting in a smooch near a broadcast stage -- and the sweet moment was all caught on video!!

The ex-Philadelphia Eagles center -- who swapped out his Chiefs tailgate attire for a button-down shirt for ESPN's pregame show -- was gearing up to break down Kansas City's matchup with the Saints from the Arrowhead Stadium turf ... when Kylie grabbed him for a few seconds to seemingly wish him luck.

She planted a kiss right on his lips ... and then appeared to wipe something off his face.

Kourtney Kardashian and Travis Barker's Halloween decor appears to be as horny as they are ... the couple has put up a NSFW blow-up display in their front yard.

The reality TV star got into the Halloween spirit Friday, posting a number of seasonal photos in honor of her favorite month. However, it was her and Travis' festive display that sent fans into a tizzy ... with the PDA-loving couple putting up skeleton inflatables, which appear to be boning.

Fans are torn over the X-rated display ... with some getting a hoot out of the setup, while others declaring Kourtney needs "help" for her inappropriate decorating decisions.

Brooks Nader's had quite the effect on her 'DWTS' partner Gleb Savchenko ... 'cause he's doing a full 180 on their chemistry after that viral video of them locking lips hit the internet.

We caught up with the pair Thursday ... and grilled Gleb on what changed after he initially shot down the romance rumors before their viral smooch. His response? Let’s just say it had everyone, including Brooks, blushing.

They still didn’t outright confirm whether or not they're dating -- but when we mentioned they’d make a cute couple and asked Brooks if Gleb’s a good kisser, their reactions were very telling. Watch the video and decide for yourself.

Jojo Siwa's turning up the heat with her GF Dakayla Wilson, locking lips and proving she's packing it -- in her eyebrow-raising career and in her sizzling love life.

The former "Dance Moms" star turned edgy pop phenomenon took a break from her busy schedule to pack on the PDA with Dakayla, dropping her off with a kiss on the sidewalk in Studio City Wednesday.

JS and DW just went public with their romance last month, and they're clearly still in that sweet honeymoon phase -- smiling, gazing into each other’s eyes, and kissing like they’re about to part ways forever.