"Teen Mom 2" tells four unique and different tales of what it's like to be a young parent -- but sometimes Cheslea, Jenelle, Kailyn and Leah experience similar scenarios in their lives that are portrayed in a single episode. And fittingly, during tonight's Season 6 finale, the young mothers all embarked on some new beginnings. Specifically, Chelsea and Kail had positive living-situation shakeups, while Jenelle and Leah adjusted to revised childcare arrangements with their erstwhile partners.

For starters, Cole moved into his girlfriend's home -- and even though the sweethearts had spent a considerable amount of time at Chelsea's place throughout the course of their year-long romance, this relationship change understandably meant a great deal to the couple.

"Welcome to your new life," an ecstatic Chelsea declared during Cole's first moments as a permanent resident. Aubree, on the other hand, had an important tip for the new man of the house.

"Remember to put the toilet seat down," the five-year-old quipped. Hear hear, and cheers to the re-named Houska/DeBoer abode!

Meanwhile, Kail and Javi worked to relocate after the family outgrew their initial Dover dwelling -- and they finally took Isaac and Lincoln to see their newly purchased, larger house for the first time. The best reaction to the new digs?

"We can share a room!" the jovial kindergartner adorably told his little brother. Best roommates of all time.

And now a slight shift from those two examples: While Jenelle and Nathan began to separately raise their son Kaiser -- and endured some tense drop-offs -- the dad insisted on having a discussion about her recent arrest.

"We need to come up with a game plan," he stressed. "I want to move forward. I care about you, and I'm done fighting with you."

But the mother of two could not mask the sting of the troubling events that unfolded the evening Nathan decided to press charges -- and left his former fiancée's home during a heated moment without resolving anything.

Lastly, Leah returned back home after seeking help at a treatment center -- and was overjoyed to be reunited with her three daughters. While her interactions with Adalynn's father Jeremy were cordial, Leah refused to have a conversation with her ex Corey about their twins with his wife Miranda present.

"If he can't talk to me for our children, then I'm not doing it," she told her cousin Chastity. "I'm not going to be put in another situation where I'm ganged up on." And with that, nothing was settled, and the issue regarding custody of the twins was still unresolved.

Change can bring about feelings of uncertainty -- but it can also pave the way for a brighter future. Which "TM2" new beginning touched you the most? Share your thoughts in the comments, and be sure to catch Part 1 of the "Teen Mom 2" reunion special on Wednesday, September 30 at 9/8c.