Moretz had confirmed their relationship earlier this month when she guest-starred on Watch What Happens Live and said, "We're in a relationship. It's fine. It's no biggie. And I think that, you know, the more I don't make it mysterious, the more that people don't care. So yes, we're in a relationship."
Both celebs shared pics on Instagram from last night, but Beckham's pic was a black and white version of a sweet moment during the movie's after-party, with a heart emoji caption for good measure.