Willis, 25, and actor Blair, 29, first debuted as a couple when they stepped out together in August 2012. During the outing, the actress and aspiring singer held hands with Blair as they strolled through Hollywood.
The pair were recently spotted together at Warwick in Hollywood on Oct. 24. "[They looked completely in love, slow dancing together with their arms wrapped around each other," a source revealed to Us. They were "literally lost in each other's eyes."
The Sorority Row actress and Blair first met through mutual friends and seemed to have had a positive influence on each other from the start. "We care and have so much respect for each other. There's not really much we wouldn't do for each other," Blair revealed to Us about his relationship with Demi Moore and Bruce Willis' eldest daughter during a press event for his film Detention of the Dead in June.
He added: "More than anything, we just spend a lot of time together. It's not about doing anything crazy -- it's about cooking dinner together, relaxing, spending time. That's everything to us. We're not going out anymore -- we're just enjoying each other's time."