In addition, the couple failed to share any sweet Valentine's Day messages together over the holiday weekend. Instead, Nina hung out with her best girlfriends where no men were in sight. "Sunday Funday," she wrote. "#HappyGALentinesDay."

Romance rumors between the two first started last June when Nina was spotted kissing the Whiplash actor during an event at The Improv in West Hollywood. While they didn't walk the red carpet together, both talented stars looked very comfortable and happy together inside.

Things were later officially, officially confirmed when the couple shared some hilarious, innocent banter on Twitter.

"That weird moment when you realize you don't follow your girlfriend on Twitter…" Austin joked online. "#socialmediaproblems @ninadobrev."