Tyler Baltierra posted a sweet message to Catelynn Lowell on social media this week.

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After over a decade together, the Teen Mom OG star's love for Lowell is going strong, and as they near their Aug. 2015 wedding date, Baltierra couldn't be more excited to spend the rest of his life with "soulmate" Lowell.

"I just have to say how lucky I am to have found my soulmate at 13 years old," Baltierra wrote on Instagram on Wednesday. "I never would have thought we would be where we're at in our lives considering where we came from."

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Lowell and Baltierra have shared the ups and downs of their relationship for the last several years, both on MTV's 16 & Pregnant and Teen Mom, and VH1's Couples Therapy. And while the VH1 reality show gave fans a look inside the dark times between Lowell and Baltierra, they learned a lot on the series, and have since rededicated their lives to making their relationship work.

"I choose to put Catelynn's needs above my wants, I choose to sacrifice for her, I choose to always protect her, I choose to honor her, I choose to uplift her, I choose to put my life on the line to save hers, & I choose to never give up on her," Baltierra continued. "Love isn't easy sometimes...love isn't like the movies...love is about sacrifice & dedication and I CHOOSE to sacrifice & dedicate the rest of my life to this amazing woman & I wouldn't have it any other way."

Teen Mom OG airs Mondays at 10 p.m. on MTV.

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