Who’s your girl, Gus? Almost overnight Ansel Elgort has become the heartthrob to watch, but it looks like the Divergent and Fault in Our Stars lead is a taken man. 

The 20-year-old has been dating his high school sweetheart from New York’s LaGuardia High School (aka the Fame school) for a long time, and the couple took things public in Paris on Wednesday, June 25. 

Stepping out with ballerina Violetta Komyshan on his arm, Elgort was all smiles as he made his way to the Valentino show for Paris Menswear Fashion Week.

"Violetta was extremely excited to go to Paris. They are planning on hitting all the tourist spots,” a source close to Elgort told Us Weekly. “She's very into fashion, but she was also looking forward to some quality time with Ansel. He's been working on his music with guy friends while in New York.”

The Hollywood newcomer just wrapped up a grueling press tour for the hit film adaptation of John Green’s best-selling novel about two teenage cancer patients who fall in love. He is currently filming the sequel to this year’s Divergent, Insurgent, and recently signed on to play Cold War pianist Van Cliburn in the self-titled biopic. 

As his career continues to skyrocket, Komyshan may be making more appearances by his side. 

“He had ladies clawing their way toward him [during his press tour], which most girlfriends would have probably not been really cool with, but they have been together for a while now and Violetta is not that kind of girl,” the source continued. “Ansel is a really good guy, who just likes to have fun and she was there for most of the events to support him.”

Want to see their real-life chemistry? Watch the clip above from an Amanda Uprichard fashion ad campaign where the pair dance, flirt, and smooch!