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OK! Exclusive Video: Catelynn Lowell Shares A Scary Story About Tyler's Dad, Reveals If We'll See Nova's Birth On Teen Mom OG

Apr. 13 2015, Published 7:14 p.m. ET

Today we present to you our final exclusive interview with the gals of Teen Mom OG, wrapping it up with Catelynn Lowell, who's got a lot going on this season between her upcoming wedding to Tyler Baltierra, their newborn daughter, Nova, and their complicated relationship with Brandon and Teresa, who adopted their first child, Carly, almost six years ago.

WATCH: Catelynn & Tyler Spill On Their Upcoming Summer Wedding

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And Cate spared no detail talking about all of the above. Catelynn discusses her current relationship with Carly's adoptive parents and how "nerve-wracking" it is thinking about the moment when Carly and Nova will eventually meet. Plus, she reveals whether or not she and Tyler will be inviting Brandon, Teresa and Carly to their wedding!

PHOTOS: Adorable Pics of Catelynn & Tyler's Baby Girl, Novalee

Cate also explains why we probably won't be seeing Nova's January birth documented on the show, and reveals a crazy story about Tyler's dad, Butch, and why he's still in jail despite parole. Oh, and is Tyler still bummed that Nova is a girl and not a boy, which he clearly so desperately wanted?!