Credit: Getty Images Photo: Ian Somerhalder at The Vampire Diaries 100th Episode Celebration

The Vampire Diariess vampire-torturing scientist, Dr. Wes, may not be the most popular guy on campus for our favorite TVDers, but — in real life — Rick Cosnett seems to be integrating into the tight-knit cast like a duck to the water. Check out this hilarious selfie Ian Somerhalder (Damon Salvatore) took with Rick!

“Damon Salvatore you bloody legend @iansomerhalder #HappyBirthday #TeamWes #LookBehindYou,” Rick tweeted Sunday, along with the pic in question. In it, Rick is stealing Ian’s signature look and smouldering at the camera while Ian, standing in front, looks warily at Rick. Love it! And, as you may have noticed from Rick’s tag-fest, the snapshot was shared on Ian’s birthday. The actor turned 35 on December 8th, and the TVD cast and crew didn’t waste any time sharing their love on Twitter. Check out the message from on-again, off-again beau and co-star Nina Dobrev (Elena Gilbert)...

“Happy Bday Smouldy! Hope you had a beautiful day filled w/ smiles+gluten free cake! But not too much cake, we're on the CW :P @iansomerhalder,” Nina tweeted.

For his part, Ian tweeted about his gratefulness for the support of his non-profit, the IS Foundation. His birthday wish was that 1 billion people would give $35 to the organization: “On my birthday, I just wanted to say thank you to the world for creating the ISF family,” he Instagrammed, along with an oh-so-adorable pic of himself with one of his puppies. “Please help us by being THE 1,000,000 out of the 7,00,000,000 on the planet to help create the change we know we need and protect a ton of these little ones!”

Meanwhile, TVD showrunner Julie Plec started an international campaign to get “Happy birthday, Ian Somerhalder” trending around the world: “At least 6 countries have already trended Happy Birthday Ian Somerhalder.  Let's get it trending everywhere! Send photographic evidence,” Julie tweeted on Sunday. Basically, the Twitter-sphere was abuzz with birthday wishes for Ian.

Catch the next episode of The Vampire Diaries on Thursday, December 12 at 8 p.m. ET on The CW.