Hook Ups

Justin Bieber has a teenybopper on his tail ... she follows him everywhere these days. She's 17.

Sofia Richie -- daughter of Lionel -- joined the 22-year-old on his private jet Thursday ... likely bound for Japan where he's appearing this weekend.

They've been inseparable for the last few days.

Lionel's little girl turns 18 in 13 days.

Ryan Lochte's already a big winner in Rio -- because his hot Playboy Playmate girlfriend flew out to Brazil to hang with the Team USA swimmer.

Lochte's lady is Kayla Rae Reid -- a Playboy model who's been connected to Lochte for several months.

Our sources say the two have been dating since March -- but things got serious in April when he posted the first pic of the two of them together on social media. Since then, she's met his family and things seem to be going well.

Kayla is currently in Rio with Lochte -- the two were acting all coupley at the Beats House over the weekend.

Lochte is only competing in one event (the men's 200 individual medley) and that goes down on Wednesday. Other than that, the two have plenty of time for a couple's vacation.

#Jeah.

They're dropping like flies on "Bachelor in Paradise" -- Amanda Stanton and Josh Murray just couldn't resist blowing their secret and going public as a family ... cause they're getting married!

This is where we should probably say spoiler alert, but what the hell -- sources close to the couple tell us Josh ends up popping the question, and Amanda says yes. Only one episode of 'BiP' has aired this season -- and all participants are supposed to lay low ... so they don't ruin story lines.

We're told Josh and Amanda wanted to stay undercover until the finale, but just couldn't stay holed up because her 2 kiddos were getting anxious -- so they hit up the Orange County Fair Thursday night.

Josh is living with them in the OC, but our sources tell us they plan to buy a place in Atlanta.

We broke the story ... another 'BiP' couple, Lace and Grant, were spotted hanging out the day before the show even premiered.

We're betting Justin Bieber's already had a close-up view of the birthmark in this pic -- can you spot it? It's okay if your eyes didn't go there first.

Model Sahara Ray's the chick the Biebs is cavorting with in Hawaii. Check out the pics ...the Aussie's fantastic curves are what dream vacations are made of ... if you're Justin.

It goes down in the DM ... at least, that's how it went down with Cristiano Ronaldo, who social media pimped his way into a hangout session with Casi Davis, TMZ Sports has learned.

Jaden Smith really enjoyed his dad's "Suicide Squad" premiere -- not because of the movie, but because he was all over his girlfriend all night.

Jaden was hugging, sucking face and holding hands with Sarah Snyder during the NYC event.

This is just what they do ... we've seen Jaden and Sarah doing this same routine before out in the streets of NYC.

They're young.

Kiss-tiano Ronaldo????

Seems someone has finally tamed the tan stallion ... because Cristiano Ronaldo was getting VERY up close and personal with a hot blonde in Miami this weekend ... and even planted a kiss on her!

The two were all about the PDA -- holding each other in the pool ... and literally getting on top of each other on the deck chairs.

At one point, a smokin' hot friend came over and began smackin' the lady on her butt -- and no one complained.

Despite all the attention, Ronaldo has yet to put her on his Instagram page -- so, it's not official ... at least not yet.

11:09 AM PT -- MYSTERY SOLVED!!!

The woman is Cassandre Davis -- a Florida-based fitness model who's racked up more than 500k instagram followers due to her ass-centric workout videos.

Travis Kelce says he's REALLY dating one of the women he met on his reality dating show -- but had to weed out the fame-hungry thots before he could find his special lady.

The KC Chiefs tight end just finished taping "Catching Kelce" -- where 50 chicks from 50 states competed for his love, affection and NFL salary (kidding on the last one, maybe).

The shocking part ... Travis says he found a real-life KEEPER ... and he's still dating her right now (even though the cameras stopped rolling).

Another New England Patriots star ... dating ANOTHER smokin' hot supermodel.

This time, it's wide receiver Julian Edelman and Victoria's Secret Angel Adriana Lima.

Amber Heard -- who's in the throes of a divorce with Johnny Depp -- is spending a lot of time with a guy who makes Johnny look like a pauper -- billionaire extraordinaire Elon Musk ... TMZ has learned.

Our sources say Amber has known the Tesla inventor for several years, but in the last few months they've been spending a lot of time together.

Just last weekend Amber and her sister were hanging out in Elon's hotel bungalow in Miami. We're told she had a 1-on-1 dinner at his L.A. house 2 weeks ago. We're told she recently went to Elon's L.A. area office to spend time with him. And we're told he's paid several visits to her home.

No one in Amber's camp is calling it "dating," but we're told the amount of time they spend together has definitely increased.

Elon -- who's worth an estimated $12.7 billion -- is also going through a divorce with Talulah. They married, divorced, remarried and she filed for divorce for a second time in March.

Message to the next guy who takes Lolo Jones on a Tinder date ... Ms. Jones ain't loyal ... 'cause she was actively using the app during her first date ... swiping up a storm to find her next match.

Lolo appeared on the "TMZ Sports" TV show and opened waaaaay up about her first Tinder date ... and the hilarious tweets she used to document the experience for her fans.

Question is, now that she's on the app, will she take her Tinder romances one at a time ... or is it open season for Ms. Jones?

Lolo proudly proclaims it's the latter ... saying not only is she gonna see other guys from Tinder ... but that she was looking for them WHILE ON HER FIRST DATE ... ouch.

Alexander Rossi says there was 1 very unforeseen consequence to winning the Indy 500 ... a gaggle of women SLIDING into his Instagram DMs ... wanting to hook up!!

TMZ Sports talked to the 2016 Indianapolis 500 winner -- who's 24 and single -- in L.A. Monday ... and asked if his lady situation has changed since winning one of the world's biggest races.

The answer ... a resounding YES!!

Wrestler Rob Van Dam jumped back on the horse quickly after ending his 17-year marriage, and with good reason.

Rob's dating professional wrestler Katie Forbes ... we're told it's been going on since May ... around the time his wife filed for divorce.

It's not like Swifty and Hiddleston, allegedly -- we're told Rob and his ex, Sonya Szatkowski, had been separated for a while before Rob hooked up.

Rob and Katie met back in April at a wrestling convention -- at adjoining signing booths.

We know her sign ... flames.

Nick Young's got a cold, hard fact for his baby mama -- Swaggy P's single and completely unattached, even though he knocked her up a second time.

Sources close to the NBA star tell TMZ Sports ... Nick and his ex, Keonna Green, are NOT back together. If you'll recall ... Keonna told US Weekly she wasn't apologizing "for being in love with a man who I have a lot of history with." It appears that's exactly where Nick wants to keep it -- in the history books.

We're told Nick's living it up in the single lane and wants to keep it that way so he can concentrate on the upcoming NBA season. Nick's living alone in the house he used to share with Iggy. Keonna's NOT living there.

As for Iggy'z one-finger salute the other day ... Nick's not trippin.

Two guys who had to watch their ex-boyfriends' marriage proposal go viral ... are now crushing the dreams of Internet cupids, proving fairy tales do NOT come true, usually. Deal with it.

The guys, Matt and Jacob, became a thing on social media when they tweeted about the proposal that went down during London Pride.

If you missed it ... a London cop (Matt's ex-fiance) stopped in the middle of the parade, got down on one knee and asked his bf (Jacob's ex) to marry him. The proposal was shared more than 15 million times on Twitter, so Matt and Jacob quickly caught wind ... and couldn't resist tweeting.

Jacob and Matt tell us they were flooded with comments from people who thought it would be poetic justice if they got together -- but Matt says he has a new BF, so he's not looking.

They say they did exchange DMs, but simply to discuss their exes' engagement. Jacob says he'd be down to grab a pint with Matt, but that's it.

Nicolas Cage is back in the saddle again, taking a mystery woman out for sushi ... a few hours after announcing his marriage is ending.

Nic and his chick -- sporting a colorful kimono -- hit up celeb hotspot Asanebo in the Valley on Friday, making this a pretty high profile evening. There was some major PDA going on too, so we can assume Nic's serious ... about making out with her. Check out the gallery of their date.

As we reported, Nic and his wife of nearly 12 years, Alice Kim, have been separated since January ... although they just went public with it on Friday afternoon.

Saturday night he was in Las Vegas at Carrot Top's show, and his date appears to have been the same woman ... still rocking the kimono.