Kristen Stewart and Alicia Cargile are planning to tie the knot, according to reports. This comes just days after the American Ultra star confessed she's "really in love" with her 29-year-old girlfriend.

"They've been hashing out the details ever since. They know [they] want to have a small, outdoor ceremony, probably somewhere north of L.A. like Santa Barbara or Big Sur, with a bohemian feel. They want it to be romantic but non-traditional," source told OK! magazine. (via HollywoodLife)

The 26-year-old actress recently told Elle UK for their September issue that she was really in love with Cargile.

"I think also 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,'" she told Elle UK.

"When I was dating a guy I was hiding everything that I did because everything personal felt like it was immediately trivialised, so I didn't like it. We were turned into these characters and placed into this ridiculous comic book, and I was like, 'That's mine. You're making my relationship something that it's not.' I didn't like that. But then it changed when I started dating a girl. I was like, 'Actually, to hide this provides the implication that I'm not down with it or I'm ashamed of it, so I had to alter how I approached being in public. It opened my life up and I'm so much happier."

Stewart dated Cargile in 2015 but split from her in October. After Stewart ended her short fling with French singer Soko earlier in the year, the duo rekindled their romance and were first spotted together at the Cannes Film Festival on 15 May. The following month, the couple were pictured holding hands while strolling on the streets of Los Feliz.

"They were both in a good mood, smiling and very animated towards each other," an eyewitness told Entertainment Tonight. "When standing outside their car, Alicia started hugging Kristen and kissing her on the neck. They were both aware that they were being shot, but were not shying away from the camera."

Kristen Stewart Alicia Cargile
After rekindling their romance, Stewart and Cargile were first spotted together at the Cannes Film Festival on 15 May Andreas Rentz / Getty Images