And while Reeves has typically been private about his romantic relationships in the past, the internet hearthrob has chosen not to shy away from putting his romance with Grant in the spotlight as of late.
The couple went public with their romance in November, holding hands as they walked the red carpet at the LACMA Art + Film Gala presented by Gucci in Los Angeles.
But what many fans did not know was that Reeves and Grant's history dates back nearly a decade now.
The actor and the artist have been friends for years, and even collaborated on works together such as Reeves' 2011 book Ode to Happiness and 2016’s Shadows, which was also written by Reeves with illustrations by Grant.
The pair have also founded X Artists’ Books, a publishing house which they established in 2017.
"I remember a couple of years ago, about a year and a half ago, [Grant] said, ‘Keanu Reeves is my boyfriend,’ and I’m like, ‘Wait. What? What? What?'” Tilly, 61, told the publication.
“It’s really astonishing to me how in the last five months, all of a sudden, she goes to an event with him and everybody goes insane, like, ‘It’s his new girlfriend,'” Tilly said, noting Grant “had gone to a lot of events with him [in the past]. It’s just suddenly surfaced that he’s been dating her for several years.”
"I think every single person I knew called me in the first week of November, and that’s fascinating,” the artist said. "But the question I’ve been asking in all of this is: 'What is the opportunity for good?'"
Grant was also asked in the Vogue interview if marriage was something she could foresee for herself in the future.
"Over a glass of wine… I would love to tell you,” she joked at the time. "Love at every level is deeply important to my identity. How’s that for dodging the question? I do not believe that isolation is the way. There is a period of isolation that I do as a painter, but I deeply value the experience of being in relationships."
While Reeves has yet to publicly address his romance with Grant, a source told PEOPLE back in November that the Matrix 4 star was ready to be more public with his relationship.
“Keanu wants to openly share his life with her,” a source said. “He is extremely happy and grateful to have Alex in his life.”