Wendy Madison Bauer had been with Perry for the last 11 and a half years.
Perry died on Monday. He was 52.
ET was with 'Riverdale' stars Cole Sprouse and Hayley Law at the premiere of 'Five Feet Apart,' in theaters March 15.
Sophie Perry says she would not be able to get through her father's death without her mom, Minnie.
ET sat down with Patricia and Rosanna Arquette as they were honored by the Visionary Women's organization as Sisterhood Visionaries.
The actresses emotionally open up to ET about the actor's untimely death earlier this week.
ET spoke with the 'Five Feet Apart' actor about his late co-star Perry at the premiere of his new film, in theaters March 15.
The 26-year-old actor sweetly remembered his late co-star at the premiere of his new film on Thursday.
Perry played Apa's dad, Fred Andrews, on The CW's 'Riverdale.'
On Thursday, the 49-year-old actor shared two photos of him and Perry, along with a heartfelt message in honor of the late star.
The actor died on March 4 after suffering a massive stroke.
See the actress' moving tribute to her former co-star.
"Goodnight Sweet Prince."
The late actor, who portrayed Archie's father, Fred Andrews, on the popular CW show, died on Monday at the age of 52.
