Who is Rob Gronkowski's girlfriend? Meet Sports Illustrated model Camille Kostek

Rob Gronkowski is hanging up his helmet, and his girlfriend couldn't be more proud of him.

The New England Patriots star confirmed speculation on Sunday night that he's retiring from the NFL, and Sports Illustrated model, Camille Kostek, took to Instagram to commend her significant other on making the difficult decision to call it quits.

"You motivate me to be better, you show me that limits can be pushed and that challenges make you stronger," Kostek wrote alongside a slideshow of photos of them together. "If you ask me, you’re the best to ever do it. There is nothing like the thrill of watching you play. I love you with all my heart, you allow me to take the term 'proud girlfriend' to a new level."

"For all the people that have come up to us to tell you they are your biggest fan, I quietly smile because I know I’m yours," she added. "And I will continue to root you on in all that you do ❤️💙 WE LOVE YOU PATS NATION."

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Rob Gronkowski and girlfriend Camille Kostek together
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Rob Gronkowski and girlfriend Camille Kostek together
LAS VEGAS, NV - MAY 01: (L-R) Camille Kostek and Rob Gronkowski attend the 2019 Billboard Music Awards at MGM Grand Garden Arena on May 1, 2019 in Las Vegas, Nevada. (Photo by Kevin Mazur/Getty Images for dcp)
LAS VEGAS, NV - MAY 01: (L-R) Camille Kostek and Rob Gronkowski attend the 2019 Billboard Music Awards at MGM Grand Garden Arena on May 1, 2019 in Las Vegas, Nevada. (Photo by Jeff Kravitz/FilmMagic for dcp)
BOSTON, MASSACHUSETTS - APRIL 23: Denise St. Mary, Rob Gronkowski, Camille Kostek, and Kathy Green attend Breast Cancer Research Foundation's Boston Hot Pink Party Honoring Bill Belichick & Linda Holliday at InterContinental Boston on April 23, 2019 in Boston, Massachusetts. (Photo by Paul Marotta/Getty Images for BCRF)
You motivate me to be better, you show me that limits can be pushed and that challenges make you stronger. If you ask me, you’re the best to ever do it. There is nothing like the thrill of watching you play. I love you with all my heart, you allow me to take the term “proud girlfriend” to a new level. For all the people that have come up to us to tell you they are your biggest fan, I quietly smile because I know I’m yours 😉 and I will continue to root you on in all that you do ❤️💙 WE LOVE YOU PATS NATION & @patriots !!!! #retirement #87 #HallOfFamer
back with my baby 💃🏼🕺🏼
Camila y Roberto encantan estar en el mar
was being selfish in my last post. Here we go
🎿
👱🏼‍♂️👩🏼
tastes like a champion
Can’t express how proud I am of this guy. Now LFG #SUPERBOWL53
A great birthday weekend in Jamaica with my Jamaican baby! #zipline #ropeswing #bandz #activation
MERRY CHRISTMAS FROM US TO YOU!!!!! Xoxox
The holidays are best spent with the people you love the most 🖤 Thankful to be surrounded by so much love and light in my life. Off to squeeze my family extra tight now!!! Happy Thanksgiving to you all🍁🍽!!! Wishing you happiness and health this holiday season!
happy birthday to my boyfriend, @jimmyfallon 🎈
watching you practice is cool, but the end is my favorite part #onfieldkisses #yousweatybutyoucute 💙❤️ shoutout to my sexy photog @jessiejamesdecker 😘 welcome to #PatsNation 🏈
my sweet boy #BackInBUF #handsomeshometown
Another successful White Party benefiting @friendsofcarly ❤️ Rob tried to keep up with my dance moves and ended up completely ripping his pants open in the front.... this was our idea of covering it up best for a pic 💃🏼🕺🏼#CarlysClub #forthekids #Buffalo
🐎 GO GRONK GO 🐎🐎🐎 #87 on the field #6 on the track #BelmontStakes #StyledbyJo
happy birthday stud 🎈love you long time
WESTWOOD, CA - JULY 14: NFL player Rob Gronkowski and girlfriend Camille Kostek arrive at the Nickelodeon Kids' Choice Sports Awards 2016 at UCLA's Pauley Pavilion on July 14, 2016 in Westwood, California. (Photo by Allen Berezovsky/WireImage)
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The post came about a month and a half after Kostek stepped into the spotlight after Gronk's latest Super Bowl win at Super Bowl LIII. Kostek joined him on the field after the game for a romantic moment that she shared on Instagram with the cheeky caption, "tastes like a champion."

But who is Kostek? And how long has she been dating Patriots tight-end Gronkowski?

Camille Kostek, 26, first made waves as the first winner of Sports Illustrated Swimsuit Issue's Instagram-based model search. This year, she was named as the iconic magazine's rookie model.

The blonde bombshell has been linked to Gronk, 29, since 2015, when she met the NFL star right after she quit her job as a Patriots cheerleader.

"We first got in touch once I resigned from the team," she told Fox News. "I always knew who he was before I was even a cheerleader. I knew who he was on the roster. I just never paid any mind. Once I resigned is when we finally met."

In the last several years, the pair has gotten more and more public about their romance on social media as their relationship has progressed. They first appeared on one another's Instagram accounts in 2015 and made their red carpet debut together at the 2018 Kids' Choice Sports Awards.

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Camille Kostek on her Instagram account
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Camille Kostek on her Instagram account
got my outfit for Super Bowl Sunday, what are you guys wearing ?? 🤪 🏈
COUNTDOWN TO KICKOFF 🏈 LFG @patriots !!!!!! I’m sending energy from California to Gillette!!!! Suiting up for my Softball game at Pepperdine University supporting @california.strong ❤️ It’s time for me to hit some homers while the boys score touchdowns HERE WE GO
I’m back back to Cali Cali 🌞
but first, let me take a selfie 🤳🏼
🚕 💋
@si_swimsuit takes Miami 🌺
cropped football jersey and a bikini bottom ?! @mj_day you get me 🏈👙
got back from Australia just in time for Halloween in LA 🍭 #TrickOrTreat my sweeeets 🖤
Imma tiger RAWRRR 🐯🐯🐯🐯 sneaky peeeeky for Sports Illustrated Swimsuit 2019!!! . REPOST @si_swimsuit ✨ @mj_day @josie_clough @michael_brennan @peterbeard
I got this really crazy overwhelming feeling of excitement out of no where and remembered I am smack dab in the middle of experiencing and living a dream of mine. This euphoric feeling can’t be shook. Amongst all, I’m living this model dream of mine in the shape that I feel most myself in. The shape and size that had worked against me in the industry for years, was the same body I got to rock in my @si_swimsuit debut 👙 I’m going to continue standing tall and posing proud for my girls to embody all that they are 💪 We are all capable of truly anything and I’m a firm believer that if you hustle with heart your timing will all make sense 🧚‍♂️ . Sports Illustrated Swimsuit 2018
describe yourself in one facial expression emoji below . Mine is 😏 ... your turn
What a pleasure it was to get a sneak peek of @hubweek in Boston before it’s open to the public TOMORROW! The amount of creativity that surrounds this city is magical ✨ The art, the evolving technology and science and musical talent is displayed in the most incredible and interactive way in Boston all week!! If you’re in the area you should check it out for yourself ❤️ #HUBweek
when you’re in public and you text bae from across the room and wait for him to read it 😏
Would you rather order room service to eat in your robe or dress up to dine fancy for a dinner 🍴
🌺
Back in 🦊boro ☺️❤️🏈
🍒🍒🍒🍒🍒 if you zoom in close, you can find me wearing my favorite pieces from my #VoyagerCollection for @dunejewelry 😍 gold sunnies charm paired with my BZE airport code ✨
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Kostek has gotten more and more used to her private life being fodder for the public, but it definitely took some time for her to get comfortable with it.

"I am such a private person,” she said. “It was hard at first when people would send articles with my name on it. It’s an overwhelming feeling to read something that you have no control over. But like most things, you get strong when you have to deal with situations like that. It’s gotten a little easier. And usually, the people that are close to you know the truth. So it’s one of those things where you just have to let people think what they wanted to think."

Gronk and Kostek briefly split in 2017, before getting back together.

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