Is Kristen Stewart having an affair with St. Vincent (Annie Clark), leaving Alicia Cargile behind?

Previously, the actress has opened her love for her on-off girlfriend, Alicia Cargile, saying "Right now I'm just really in love with my girlfriend. We've broken up a couple of times and gotten back together, and this time, I was like, 'Finally, I can feel again,'" during her interview with Elle UK.

However, lately, the "Twilight" star is reportedly dating musician St. Vincent who happened to be Cara Delevingne's ex-girlfriend. The singer-songwriter broke up with Delevingne last month, after a year and a half of relationship.

It was reported that Stewart, 26, and St. Vincent, 34, first met at a comedy show in L.A in August but their romance started when Stewart allegedly brought the alt rocker to the Certain Women screening at the New York Film Festival.

"They spent almost every day together after that," an insider told US Weekly.

Since then, the pair is reportedly always together. The day after the screening, it was said that they were spotted at the Soba-Ya, a sushi restaurant in NYC and stroll in the East Village.

"It's been very romantic," the source added. "Kristen is always whispering closely in her ear and asking her opinion."

The Café Society star, in her interview with Elle Magazine for its Women in Hollywood issue said that she isn't "ashamed" or "confused" about her sexual preference.

"Things have changed. And not just with me - we're really allowed to encourage this new acceptance to develop and be awesome," Stewart told Elle.

In a separate interview with The New York Times Style Magazine, last August, Stewart spoke about the extreme attention given by the media in her relationship with Robert Pattinson, which she can't handle.

"People wanted me and Rob to be together so badly that our relationship was made into a product," she said. "It wasn't real life anymore. And that was gross to me. It's not that I want to hide who I am or hide anything I'm doing in my life. It's that I don't want to become a part of a story for entertainment value."

However, things have changed when she begun a new romance with Cargile.

"I would never talk about any of my relationships before, but once I started dating girls it seemed like there was an opportunity to represent something really positive," she explained. "I still want to protect my personal life, but I don't want to seem like I'm protecting the idea, so that does sort of feel like I owe something to people."

Kristen Stewart and St. Vincent have yet to give comments on the recent rumors and reports circulating online.