Major Milestone! Chelsea Houska's Boyfriend Cole DeBoer Moves Into Her South Dakota Home

Not all Teen Mom stars make impulsive, risky decisions!

After more than a year of dating, Chelsea Houska is now living with her boyfriend, Cole DeBoer, RadarOnline.com can exclusively reveal.

Sources say the hunky college grad and traffic control specialist, 25, moved into the Teen Mom 2 fan-favorite's South Dakota home at the end of July.

Fashionista Houska, 23, hinted about the upcoming milestone when she showed off her attempts to make closet space for her beau on July 15 via Twitter.

As RadarOnline.com previously reported, the mom to Aubree, 5, is smitten with her good guy boyfriend— and so is her protective dad, Randy.

"Cole is so polite; a yes sir, no sir kind of guy," a source said. "Randy thinks he is the 'Anti-Adam!'"

The esthetician's baby daddy, frequent jailbird Adam Lind, 25, has put her through the ringer for years.

Lind, who unsuccessfully attempted to get 50/50 custody of Aubree earlier this year, was seen manipulating their daughter with ice cream on a recent episode of the MTV reality series.

""He's never going to change. Even if he does change, I'll never trust him. I just want to do a good job and raise her right and for her to end up good and happy and no problems," Houska told her father of her ex onscreen. "I don't want anything to be ruining any part of her. And he is."

DeBoer, who acts as a handy man around Houska's home and acts as a daddy to Aubree, recently made his Teen Mom 2 debut this season.