He also joined Temple and the rest of the cast for dinner the same day.
An insider said that the actress "ran over to him, wrapped her arms around him and started kissing him," before she left the premiere."They try keep it pretty quiet but very supportive of each other," the source went on to explain.
"They were both single and it just worked."Angarano supported his new girlfriend at the Sundance Film Festival on 21 January at the premiere of her new film, Afternoon Delight.
The pair held hands and cuddled as they posed for photographers.
Before leaving for the premiere, the actress "ran over to him, wrapped her arms around him and started kissing him," the insider tells Us.Michael Angarano has fallen for another one of his costars!A source confirms to Us Weekly that Angarano -- Kristen Stewart's boyfriend before Robert Pattinson -- is now dating actress Juno Temple, whom he met on the set of The Brass Teapot.Niecy Nash plays Desna, the owner who cares for her mentally ill brother Dean (Harold Perrineau).Carrie Preston, Judy Reyes, Jenn Lyon and Karrueche Tran play the other manicurists, while Jack Kesy stars as Roller, the own of the shady pain clinic.