The couple — who went public with their romance in August 2022 — got engaged on Saturday in Los Angeles, a rep for the singer confirms exclusively to PEOPLE.
Lutes, a 32-year-old songwriter who first met Lovato in January 2022 when they co-wrote her song "Substance," popped the question with a bespoke pear-shape diamond solitaire engagement ring created by N.Y.C. luxury jewelry boutique Material Good.
After a "personal and intimate proposal," Lutes and Lovato (who uses she/they pronouns) headed to Craig's, one of their favorite L.A. restaurants, to celebrate with their families.
On Lovato's 31st birthday in August, Lutes shared a carousel of sweet selfies and silly videos paying tribute to his now-fiancée.
"happy birthday to my best friend. you're obvs the most beautiful and talented person to ever do it," he captioned the post. "but more importantly you're weird af and u make me cry laughing."
Aside from co-writing "Substance" with Lovato, Lutes also shares writing credits on her tracks "Happy Ending" and "City of Angels," all off Lovato's eighth album Holy Fvck.
"I definitely am in a really good place," Lovato told CBS Mornings earlier this year while promoting their new music. "I don't know what I'm going to write about on my next album because I'm so happy. It is a really good feeling ... definitely a bunch of sappy love songs — for sure."
We became friends first. We were friends for several months and then we decided to start dating and well, after we told each other how we felt," said Lovato.
Marking his birthday in March, Lovato called the indie rocker her "sweet angel" in a heartfelt social media post.
"I've waited my whole life to find you and I can't wait to celebrate so many more birthdays together.. you're a literal dream come true and I'm so grateful to call you mine," she wrote on Instagram.
