The iconic duo now have four kids together and a bit of a reputation for playfully teasing one another in public.
And this week, Lively appears to be taking things one step further, teasing a fan's partner in a now-viral video.
While at a Wrexham FC football game at the weekend supporting her other half (Reynolds co-owns the football team), Lively was asked by a fan to say hi to his girlfriend, Stephanie.
He said: “Blake, please say hi to Stephanie! It’s my girlfriend.”
The Gossip Girl actress cheekily responded doling out some dating advice, saying: “Hi, Stephanie. You should leave him!"
Prompting an uproar of laughter from the football fans nearby, the star instantly gasped at her own comment, putting her hand to her mouth.
Speaking about the moment later on Twitter, the fan shared: "Steph's cried happiness and she’s absolutely over the moon.. Luckily she hasn’t broke up with me! Thanks again @blakelively @stephaniexcxc."
It's thought that the original post of the video has been taken down, but it had around 133.8k views before.
Reynolds bought the football club in November 2020 and, as you'd expect from the couple, there's been plenty of banter about the decision ever since.
Reynolds openly admitted that Lively wasn't best pleased when he bought the Welsh football club with fellow actor Rob McElhenney.
Plus, back in January, Lively shared lighthearted clips to her Instagram stories as Wrexham FC played Sheffield United. She shared: "I bought ESPN+ today. Just to watch my husband experience crippling anxiety live. Worth it."
It's not all jokes in the Lively-Reynolds household, though: when Reynolds won an Icon Award at the People's Choice Awards back in December 2022, he was quick to credit both his wife and children. "Thank you, Blake and my three daughters. It's going to be a fourth child very soon. Blake and my girls, you are quite literally my heart, hope and happiness."
"I joke that my family exhausts me, but you give me more strength than any man can possibly deserve."
Marie Claire Newsletter
Celebrity news, beauty, fashion advice, and fascinating features, delivered straight to your inbox!
Ally Head is Marie Claire UK's Health, Sustainability, and Relationships Editor, eight-time marathoner, and Boston Qualifying runner. Day-to-day, she works across site strategy, features, and e-commerce, reporting on the latest health updates, writing the must-read health and wellness content, and rounding up the genuinely sustainable and squat-proof gym leggings worth *adding to basket*. She regularly hosts panels and presents for things like the MC Sustainability Awards, has an Optimum Nutrition qualification, and saw nine million total impressions on the January 2023 Wellness Issue she oversaw, with health page views up 98% year on year, too. Follow Ally on Instagram for more or get in touch.
As a fashion editor I’m super picky when it comes to presents, but this luxury brand nails Christmas gifting every time
All I want for Christmas is one of these picks
By Jazzria Harris
Royal experts weigh in on whether Kate Middleton actually watches The Crown
By Jenny Proudfoot
Stocking filler ideas for all the family that they will *actually* use
30 stocking filler ideas that won't just collect dust
By Dionne Brighton