But now the couple have reportedly postponed their June wedding so they can 'work out their issues'. Hmmm.
According to US magazine Life & Style, the couple seem to have listened to advice from their parents who were concerned they were too young to get hitched.
A source told the mag: "They were supposed to get married in June but there have been so many problems with them, they thought it was best to work out their issues before making such a big commitment.
They continued: "They aren't ready. Their families are both concerned. They don't want to see Miley and Liam get married and then get divorced. They're very young to be getting married."
Liam's sister-in-law, Elsa Pataky, who is married to his brother Chris, recently hinted at the news, admitting she wasn’t sure if the wedding was on.
She confessed: "I don't know. If they get married it would be nice to go."
However, Liam’s older brother Luke, seemed to think all was rosy when he spoke to Entertainment Weekly recently.
"She's great. She loves our kids, and our kids absolutely love her. She won our hearts," he said.
"I find her really interesting. I find her very articulate, and years in maturity above her age. But at the same time, she's very much like Liam.
He added: "I think a lot of people don't realise that they are really, really in love. They actually are a perfect match in a lot of ways."