Miley Cyrus, Patrick Schwarzenegger

Seth Browarnik/startraksphoto.com

Now this is what we call getting serious!

Miley Cyrus has joined Patrick Schwarzenegger and his father, Arnold, on a family ski trip to Idaho! A Schwarzenegger family friend confirms to E! News that Miley joined the family on its annual trip as Patrick's guest, and The Terminator has taken a liking to the "Wrecking Ball" singer.

"Arnold has embraced her with open arms," the insider tells us.

The family was spotted dining with Miley at The Kneadery, a restaurant in Sun Valley that also happens to be Arnold's favorite! An eyewitness also tells E! News that Miley wasn't the only tag-along girlfriend on the trip—Arnold brought his girlfriend, Heather Milligan, too.

Miley Cyrus, Patrick Schwarzenegger

INFphoto.com

According to the source, Miley and Patrick arrived at the restaurant together a little after his father showed up, and the whole gang stayed for a little more than two hours! But after the lunch, the group went their separate ways. Miley and Patrick decided to do some shopping and even purchased a homemade ice cream maker and an inner tube on which to sled.

"Miley and Patrick definitely look like a cute, happy couple and are getting serious," the eyewitness tells E! News exclusively.

Eating and shopping aren't the only activities the young couple have been up to, as it turns out Miley has been fitting in some time for music. The "We Can't Stop" singer was spotted taking the stage and singing at Whiskey Jacques', a music venue and sports bar in Idaho. She was also seen at Casino Bar.

The two lovebirds have been spotted together frequently, whether they're running errands together or stopping by charity events. And everyone seems to agree that the two are undoubtedly smitten with each other!

An eyewitness previously told E! News that Miley and Patrick walked hand in hand as they shopped together and "appeared happy and seemed to be great moods. They are really affectionate with one another. They look like a really happy couple."

With the New Year just around the corner, we have to wonder if they're coming up with any resolutions together! 

—Reporting by Marc Malkin and Michelle Falls

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