Teen Mom OG Promises: How Zach Proposed To Cheyenne -- And Ryder

Cheyenne and Zach made a "commitment for a lifetime" throughout tonight's Teen Mom OG episode: The longtime sweethearts got engaged in front of their friend and relative at their baby sprinkle for son-on-the-way Ace. Ryder was also piece of the individual moment.


Before Zach popped the question to Chey and Ryder, he made sure to get the blessing from her father Kyle. Next, he devised the plan: The proposal(s) would unfold at the aforementioned party in a separate indoors area, and the two could be blindfolded on their way to the individual spot.


Any time Cheyenne arrived at the romantic destination, she was genuinely surprised. And no, Chey, you weren't procuring a crib!


"Twelve years later, I got you right where I want you," Zach told a stunned Cheyenne. "And the perfect part about it is, this is right where I know you hope to be also. Us making the choice to bring life into this world right here was the ideal decision we may ever make. I know you're going to be a wonderful mother to Ace, and I'm going to be the perfect father I can be. I promise you that."


He continued: nevertheless I feel we owe it to ourselves to right now tie the knot and make our commitment for a lifetime."


And then he opened the ring box.


"Oh my God, it's huge!" A teary Chey exclaimed before Zach posed, "Cheyenne, will you marry me?"


Cheyenne happily accepted -- and then it was time for Zach to speak to Ryder and showcase her with a "exact replica" of her mom's sparkler.


"I just gave your mommy a ring, right?" Zach sweetly instructed them four-year-old. "That's a promise to be with her for the rest of her life. So this is my promise to you that I'll routinely be there for you, okay?"


Ryder sweetly embraced Zach, he picked her up and the trio shared a big hug. And no, we can't get enough of Ry posing with her new jewelry.


Congrats to the future Teen Mom OG hubby and spouse! Be sure to keep watching Cheyenne, Zach and Ryder as they prepare for Ace's arrival every Tuesday at 8/7c.