Ariana Grande and Ethan Slater.Photo:Michelle Yeoh/Instagram

Ariana Grande and Ethan Slater

Michelle Yeoh/Instagram

Things are getting very real forAriana GrandeandEthan Slater.

A source tells PEOPLE that things are “serious” between the “7 Rings” singer, 30, and theSpamalotactor, 31, who have beenconfirmed to be dating since July.

“Ariana is serious with Ethan," they said. “She loves being with him.”

The insider added that while the pair “go out occasionally” as Grandeputs the finishing touches on her upcoming album, they “mostly enjoy staying in. It’s a very normal relationship.”

On Saturday, the couplewas pictured togetherfor one of their first times out together.

The singer and Broadway star were photographed during a night out in New York City when a source close to Grande told PEOPLE they ate dinner with her father Ed Butera at her family’s favorite Italian restaurant before seeing Slater inSpamalot.

Grande sported an all-black with a furry bucket hat, mini skirt, and black top with furry cuffs. Meanwhile, Slater opted for a more athletic getup with a zip-up, joggers and running shoes.

“They love to support each other in their work,” the source said. “When she’s done with work, Ariana loves going to the theater when she can.”

Grande shared a carousel of photos to Instagram earlier this month, which featured one image with a Spam can ornament hanging on a wall Christmas tree made of green garland.

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Ethan Slater and Ariana Grande.Eugene Gologursky/Getty; Trae Patton/NBC/NBCU Photo Bank via Getty

Ethan Slater and Ariana Grande

Eugene Gologursky/Getty; Trae Patton/NBC/NBCU Photo Bank via Getty

The ornament is, of course, a shoutout toSpamalot, the 2005 Tony-winning musical adaptation ofMonty Python and The Holy Grail.Slater is currently starring in a revival of the comedy on Broadway.

Grande has has visibly supported her beau multiple times at the St. James Theatre in New York City since it began rehearsals in October. She wasseen cheering him onduring the show’s first preview performance on Halloween and attended theopening night of the Broadway musicalon Nov. 15.

The couple initially met on the set of theupcoming movie adaptationofWickedand developed a romance offscreen.

source: people.com