Ryan and Mendes are a famously private couple who hasn't attended a red carpet since 2012, so I wasn't surprised that Mendes didn't accompany Ryan on Sunday night.
News confirmed she was already seven months pregnant.
If there's one couple who knows how to keep the public guessing about their private lives, it's certainly these two.
She also won't be the only celeb sibling in attendance.
Emma Stone co-starred with Ryan in , and she also brought her brother to the show. Sometimes it pays to be related to a famous person who also doesn't want to bring a significant other to the red carpet.
At the 2017 Golden Globes, the 36-year-old briefly mentioned his partner during his acceptance speech, thanking her for supporting his role in "While I was singing and dancing and playing piano," he said, "My lady was raising our daughter, pregnant with our second and trying to help her brother with his battle with cancer." Gosling then dedicated the award to Juan Carlos Mendes, who died of cancer in 2016.
It was a moving acknowledgement made all the more significant because the couple is so private.
Ryan Gosling has a lady at his side at the Oscars tonight — as many people do — and we have a few questions. These two seem to be cut from the same star quality cloth.) A quick reverse Google search led us to hard, internet proof that the guy has a blonde sister — and she's definitely the woman sitting with him at the Oscars.
Namely, that the woman is not Gosling's partner, the actress Eva Mendes. Gosling's elder sister, Mandi is pretty internet elusive.
But, what does it take to nab the accomplished actor's affections?