The 32-year-old singer was first reported to be engaged to the CAA talent agent - whom she has been dating since the start of 2017 - in November last year, and now, nearly a year later, she's finally confirmed the happy news.
Rumours first started swirling as early as November 2017 when Lady Gaga, real name Stefani Germanotta, started wearing a large diamond ring.
As she was honoured at ELLE's Women in Hollywood event on Monday night (Oct. 15), the "Born This Way" singer showed the world just how fearless she is - while also announcing her next big project. I was an outcast and you believed in me, and I wouldn't be here without you.
During her much-anticipated acceptance speech, the A Star is Born lead explained opting for a "stripped-down" power suit inpsired her to reflect on why she cared so deeply about the message her outfit expressed at an event established to honour women's power and work. And Ryan Murphy, thanks for giving me my first leading role.
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Neither have spoken publicly about the end of their romance although Grande has talked on social media about suffering from anxiety.
Other notable guests included: Juliette Lewis, Natasha Lyonne, Laverne Cox, Holland Taylor and Cole Sprouse-plus, you know, tons of others, too.
She said at the time: "When I went backstage, Christian was by the stairs making sure I was OK".
The couple were together until summer 2016, after Gaga was spotted walking around without the engagement ring Taylor got her. "She's in a great place now", a source told People.
They have since kept their romance increasingly low-key, though the pair were photographed enjoying a fleeting public display of affection ahead of Gaga's show-stopping Super Bowl LI halftime performance in Houston in 2017 as they cuddled on the field.