A source close to the 24-year-olds told People, "It’s a recent engagement. They’re just two people who found love quickly and make each other happy all the time. They both started talking about it this past weekend. It’s nothing they’ve been hiding."
The couple began dating last month and have since been actively posting about their relationship on social media.
Last week, Davidson got a pair of tattoos in Grande's honor, according to People.
Shortly after People reported the engagement, Grande tweeted, "i love u."
The engagement comes weeks after Grande broke up with her boyfriend of nearly two years, rapper Mac Miller, TMZ reports.