While it seems drastic, let's not forget that Miley had her ex-girlfriend Kaitlynn Carter move in with her after a few weeks of dating as well. To put it all in perspective, that was just over three weeks ago...
She moves fast!
However, things are seeming pretty serious with Cody. From love-songs to now, matching tattoos, we're hoping for Cody's sake he doesn't get his heart completely broken!
Especially now that their parents are involved.
"Puts a smile on my dial to see you both so blissfully happy," Cody's mum Angie wrote on Instagram yesterday on a photo of the pair. "Hearing your laughs and seeing the smiles on your faces lights up my heart #happyforyouguys #beautifullsouls"
Cody's younger sister Alli also weighed in on their relationship recently, saying that "they're very happy and very in love."
"It's very new, but they have history and they're posting about each other a lot," she told The Daily Mail.
While Miley has been parading her new relationship all over social media, fans have been worried for her ex-husband Liam Hemsworth who had been laying quite low since their divorce.
Liam and Maddison were first spotted together holding hands looking extremely loved up in NYC last week. Soon after they were passionately making out!
TMZ first captured the Isn't It Romantic actor on the hot date with the Bella Thorne lookalike, taking a romantic walk together and a cozy dinner in NYC's West Village neighbourhood.
Soon after they were all over each other, kissing in public, looking VERY happy.
Dating Liam is probably one thing the actress would have never expected after she revealed on the Zach Sang Show during a game of F*ck, Marry, Kill was that she would bang Liam and his brother Chris.
“And then I will f— the Hemsworth brothers, but at the same time, both of them,” she added. “I couldn’t marry them, I’m too insecure!”
“I’d be like, ‘You are too attractive, you are never allowed to leave the house!'” she concluded.
During the interview, Liam was technically still with Miley. Fast-forward to now and Miley has had TWO new relationships.
Hell, Liam may have even seen the interview and pursued Maddison... which is a BIG mood.
Unlike Miley and Cody Simpson, who have gone from 'friends' to soulmates in the matter of a week... Liam and Maddison are planning to take their relationship slow.
An insider has told People, “It’s very new. Liam is taking it slow but he’s definitely interested in her.”
Another source told Us, "He’s so into Maddison and really likes her. Liam feels like Maddison gets him and understands him, partly because she is also Australian. They also both share similar senses of humor...Spending time with Maddison has been natural, fun and easy for Liam." They go on to add that Liam has been "trying to move on from Miley with the encouragement of his family."