ET's Katie Krause caught up with the actress at the premiere of the comedy Western Damsel on Wednesday in Los Angeles, and McCurdy had nothing but love for Grande's burgeoning romance.
"I'm super proud of her and excited for her," McCurdy, 25, gushed. "I hope that she's super happy."
While the actress -- who starred opposite Grande for the short-lived Nickelodeon series Sam & Cat until it's unexpected cancellation in 2014 -- admitted that the development of Grande and Davidson's relationship has "definitely" been "very fast," she thinks they make a lot of sense together.
"They seem like they're a great fit," she shared. "From what I know of her, he seems like exactly a good person for her."
Looking back at their time together on the show, when Grande was 20, McCurdy said that the Sweetener singer definitely had a type.
"Tattoos! She always likes the tattoos," McCurdy said. "And humor, of course."