1. First, when Dylan O'Brien shared this wholesome tidbit about his middle name during an interview, which made me love him even more than I already did.
2. And if you thought that was sweet, here's Dylan hanging out with man's best friend — aka one the dogs who played Boy in Love and Monsters.
3. Plus, here's Dylan's precious reaction to the adorable video shared by director Michael Matthews.
Ohhhhhhhhhhhh my heart 🥺🐕💕 https://t.co/TKqenfgnfu
4. When Dylan perfectly recreated the Dune posters, cementing his position as the king of Twitter.
Couldn’t be more excited to share this film with you all 🙏🏻 Really proud of this one @dunemovie #Dune2021 https://t.co/oio0wMLJUR
5. Like honestly, his tweets are flat-out hilarious — and if you're not following him, you need to change that ASAP.
Honestly they’ve got nothing on my drunk white uncles https://t.co/VhlOdEkBrA
7. And that meant we were blessed with multiple behind-the-scenes pics of Dylan in character.
8. Like no, I'm not okay. Dylan O'Brien has ruined all other men for me and he doesn't know that I exist.
9. When Dylan recreated this iconic scene from Election (starring Reese Witherspoon and Chris Klein) with Sarah Ramos.
Me & @dylanobrien giving Tracy Flick & Paul Metzler in ELECTION @ReeseW @iamchrisklein
11. When Dylan shared the love he has for his mum’s cooking — especially her chicken soup recipe, which he makes while travelling to make him feel like he’s at home.
12. When he got excited about the release date of Love And Monsters on Hulu, which coincided with another special occasion.
On my bday okayyyyyyy 💁🏻♂️ https://t.co/rl9SRMvdAo
13. Speaking of the birthday boy, here's Dylan looking like an absolute snack while celebrating with Sarah Ramos, Max Minghella and Desus Nice.
14. Plus, here's Dylan doing a little birthday dance while the cast of Not Okay wishes him.
New 🎥 Dylan O’Brien (@dylanobrien) and Zoey Deutch (@zoeydeutch) celebrating his early 30th birthday behind the scenes on the set of “Not Okay” (@NotOkayFilm) in New York. (August 25th, 2021) 🎥©: madimayg Instagram Stories #NotOkayMovie
The serotonin that Dylan's smile gives me is unparalleled. 🥺
15. When Dylan posted this sweet tribute to Teen Wolf — a show where many of us first fell in love with him and his acting — on its 10-year anniversary.
10 years ago today a werewolf show premiered on MTV and succeeded. Go fuckin’ figure. Love ya always Teen Wolf ❤️❤️❤️ #10YearsOfTeenWolf
Stiles Stilinski will forever have my heart. 💖
16. When Tyler Posey, who played Scott McCall in Teen Wolf, opened up about the bond he shares with Dylan, which started all the way back when they were auditioning for the show.
17. When Dylan outed himself as a massive Swiftie and praised Taylor for her incredible songwriting abilities.
it's official: @dylanobrien confirmed swiftie + harrie 💖
To be fair, Dylan's always been a Swiftie and a loyal supporter of Taylor. It was just super sweet that he got to talk about his love for Folklore, as well as his favourite Taylor songs, during an interview with Coup De Main Magazine earlier this year. In it, he gushed over "Mirrorball", as well as "My Tears Ricochet", "Mad Woman", "Epiphany" and "The 1". He's also a huge fan of Harry Styles. Somebody has taste!
18. When he starred alongside Sadie Sink (of Stranger Things fame) in All Too Well: The Short Film — which had us all feeling a million and one different emotions.
19. When he changed his name on Twitter to "Dylan O'Brien (Taylor's Version)" because he's a supportive bestie and stan like the rest of us.
22. When Dylan looked incredibly handsome at the premiere of All Too Well (The Short Film).
23. And forever the humble actor, Dylan revealed that he was shocked Taylor even knew who he was — let alone offered him a role for All Too Well (The Short Film).
24. Meanwhile, here's Taylor singing Dylan's praises while on The Late Night With Seth Meyers.
25. When Dylan guest-starred on the Emmy and Golden Globe-winning comedy series Curb Your Enthusiasm as a more Hollywood version of himself.
26. When Dylan profoundly reflected on his career, film choices and the support circle he's had since being injured on the set of Maze Runner.
27. And finally, when Dylan posed with his puppy Tony and melted everyone's hearts.
What was your favourite Dylan O'Brien moment of 2021? Let us know in the comments so we can shower him with more praise and love!
The year is almost over and we're looking back on 2021. Check out more here!