The 27-year-old basketball player was trolled with a sign supporting Khloe Kardashian at the Cleveland Cavaliers' game against the New York Knicks at Quicken Loans Arena in Cleveland, Ohio, on Wednesday.
The game marked Thompson's return back home since reports surfaced on Tuesday claiming that he had been unfaithful to Kardashian. The 32-year-old reality star is still in Cleveland as she prepares to give birth to her and Thompson's first child together.
Kardashian has been a big Cavs fan since she and Thompson started dating in 2016, often spotted supporting her boyfriend on the court. "We [heart] Khloe," read a sign held up from the crowd at Wednesday's game.
A source told ET on Wednesday morning that Kardashian has been "completely devastated" by the cheating allegations. "Tristan is a man Khloe built a life with and saw as her forever. Khloe’s mother, Kris, flew to Cleveland to be with her and support her in whatever she needs," the source said.
See photos of Tristan and Khloe together:
Khloe Kardashian and Tristan Thompson
Khloe Kardashian and Tristan Thompson
We are ready whenever you are little mama 🦋
FBF to one of my favorite days with all of my favorite people... my surprise party 🎉 man, everyone was sooooo good at keeping that secret! Hrush, Jen and Tristan were so calm, cool and collected during glam 👀 I need to watch you sneaks lol That was such an epic night!
❥ Mom and Dad ❥
LOS ANGELES, CA - FEBRUARY 17: Tristan Thompson and Khloe Kardashian attend the Klutch Sports Group 'More Than A Game' Dinner Presented by Remy Martin at Beauty & Essex on February 17, 2018 in Los Angeles, California. (Photo by Jerritt Clark/Getty Images for Klutch Sports Group)
Mommy and Daddy 📸 @sashasamsonova
LOS ANGELES, CA - MARCH 10: Tristan Thompson and Khloe Kardashian pose for a photo as Remy Martin celebrates Tristan Thompson's Birthday at Beauty & Essex on March 10, 2018 in Los Angeles, California. (Photo by Jerritt Clark/Getty Images for Remy Martin )
✨ To the happiest of birthdays my love! How special is this thing called life that we share together?! I am so blessed to be creating beautiful monumental memories with such a wonderful man! I hope this year brings you all that you dream of! You will forever be my always! I love you baby! ✨
“When a woman is loved correctly, she becomes ten times the woman she was before” Thank you my love ❤️
✨ Day 1 of 2018 ✨
❥The day I met you, my life changed. Thank you my love!❥
👑Game Of Thrones 👑 thank you for everything @styledbyhrush @andrewfitzsimons @bryanhearns @missjilljacobs !! Happy Halloween 👻 🎃🦇
❤️ My Love ❤️
My love 💙
My birthday was incredible! Dream like almost! It's actually hard to put into words how special I feel and it's mainly because of this man right here! Thank you baby for treating me like a Queen every single day! Thank you to all of my friends and family for helping surprise me and for being the best anyone could ask for!! (Tap for glam details)
💕 US 💕
Sweet Sunday 💋
The Fab Four
To the happiest of birthdays my love! To the first of many more together! May God continue to bless you in all of your days! And may we forever look at one another like this 💋
❥ իմ սեր ❥ Im ser ❥ All my Love ❥
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Kardashian also appears to have the support of her best friend, Khadijah Haqq, who shared a shady post seemingly aimed at Thompson's alleged infidelity on Tuesday.
Khadijah -- who alongside her sister, Malika, has been best friends with Kardashian for years -- shared a quote by legendary basketball coach John Wooden, which read, "the best thing a father can do for his children is to love their mother." The reality star captioned the post with a fist pump emoji.
Kardashian's sister, Kourtney Kardashian, liked the photo. The famous family has yet to comment on the scandal.