Check out the picture Chris Hemsworth shared of the special day.
Brooks is all the way to the left, and Liam's arm is draped over her.
Although their PDA might not be as intense as Cyrus' was with Cody Simpson, it's definitely still notable.
It might seem like now's a good time for those shipping Miley and Liam to reunite to give up, but Twitter still has not let this A-list couple go.
One user tweeted, "Old Miley and Liam pics break my heart."
Another wrote, "and...at the end of everything liam and cody both hanging out with non famous wanna be models with no personality or any talent while miley is about to release her BEST album ever and take over worldwide charts again. who's winning here?"
Another shared a GIF of Miley Cyrus from The Last Song (where the two of them met) with a similar message:
Despite the fact that Liam's introducing Gabriella Brooks to family, it seems like Twitter might never fully recover from Miley and Liam's teenage romance.
Although she might not be as much of a household name as Cyrus, Brooks is successful in her own right.
According to Page Six, "Brooks works as a model and is signed to modeling agencies Storm, Priscilla and Next. She was first signed by a scout at age 14 and has since modeled for brands including Topshop and Calvin Klein."