Kristen Stewart has been with her girlfriend, screenwriter Dylan Meyer, since late last summer. Their relationship followed what appeared to be Stewart's on-again status with her ex, Stella Maxwell, but Meyer and Stewart have been going strong since they first got together last year. The Charlie's Angels star turned 30 on Thursday, and Meyer celebrated by posting the couple's first Instagram photo on her grid.

"It’s my absolute favorite persons birthday and I’m wishing everyone the volume of beautiful feeling I feel toward her," Meyer wrote. "It's a short ride on this earth, spend your time with someone that inspires you to be the best version of yourself and lights your shit on fire."

instagramView full post on Instagram

Meyer and Stewart have kept things pretty private since they started dating, but back in August 2019 a source told E! that the two are pretty smitten with each other.

"Kristen is spending time with Dylan and very happy about it," the source said. "She was seeing Stella for a little bit while it worked, but now she has moved on with Dylan." The source added hints that this relationship might be for the long haul: "Kristen isn't holding back at all and loves being with her," the source shares. "They are moving quickly and always together."

Stewart has been fairly open in the past about her feelings for the people she's dated in the. In an interview with Harper's Bazaar UK in 2017, Stewart got a little personal about her relationships and addressed her sexuality.

"I've been deeply in love with everyone I've dated," she said. "Did you think I was faking it? I've always really embraced a duality. And really, truly, believed in it and never felt confused or struggling. I just didn't like getting made fun of."