But it didn't take long for fans to notice a growing baby bump on Gabriella, which you can see here!
According to New Idea, a very smitten Liam and Gabriella are expecting their first child together.
So how does ex-wife Miley Cyrus feel about it? She's apparently heartbroken over the news.
Interestingly, Miley herself is supposedly expecting a child of her own, with new boyfriend Cody Simpson.
Cody all but confirmed the news earlier this month, when he revealed that he and Miley would start their family in Australia, as he said to The Sunday Telegraph.
“I would like to return back in Australia for sure,” he told the publication.
The star was asked about whether he would raise his family Down Under, to which he replied: “Absolutely, yes”.
At the time, Liam Hemsworth was reportedly devastated over the news.
After he heard the news, New Idea reported tha Liam was desperate to make things work with Gabriella and prove to Miley he is happy too.
While he has always valued privacy and kept things low-key, seeing Miley ham it up for the cameras in very public PDAs with Cody has changed his behaviour, sources say.
“Liam has always preferred to keep his personal life private, especially when it comes to his relationships, but Gabriella has helped bring out another side of Liam and she’s not like anyone he’s known before,” a source told Hollywood Life.
Is this a revenge baby?