Troian Bellisario talks being 'totally in love' with boyfriend at Sundance Film Festival

Pretty Little Liars star Troian Bellisario was at the Sundance Film Festival for her upcoming film C.O.G. However, it was Bellisario's romance with her boyfriend, actor Patrick J. Adams, that had everyone talking.

"You can tell she is totally in love and so is he," a source told People. "They sort of finish each other's sentences. "

The couple was seen holding hands at the TR Suites Lipton Lounge last Sunday during the festival. People continues to report the couple ate dinner at PAX Sundance and played shuffleboard and Words with Friends. After the meal, they went dancing at TAO Nightclub at Village at the Lift.

One TAO partier told People, "They looked super happy together! It looked like they were having a really good time."

Their romance continued throughout the weekend. When Bellisario had her hair styled at the Dove Color Care Salon, Adams apparently accompanied her there. "He stopped in at the front of the Suites and said, 'I'm meeting my girlfriend,' " an onlooker told People. "He was very good-natured and quiet--he didn't want to interrupt her while getting her hair done."

The evening finished with the couple going to the GLAAD premiere party for Bellisario's film, which is based on David Sedaris's writings.

While Bellisario told Just Jared the love of her Pretty Little Liars character Spencer's life was Toby, it appears she may have found the same thing in her own life.

You can catch Bellisario on Pretty Little Liars every Tuesday at 8 p.m. on ABC Family.