Credit: Kailyn Lowry on Instagram

Teen Mom 2's Kailyn Lowry gave birth to her first son, Isaac Rivera, back in January 2010, and they've been joint at the hip ever since. Kailyn and Isaac have been through a lot together, but the biggest hurdle came this past November, when Isaac became a big brother to Kailyn's second kiddo, Lincoln Marshall Marroquin!

Wetpaint Entertainment got a chance to speak with Kailyn about Isaac and Lincoln's brotherly bond, and how Isaac is doing now that he isn't the only apple of his mommy's eye.

"He just loves it," Kailyn dished. "He can’t wait until Lincoln is old enough to be able play and walk around. Before he left for his dad’s, I said, ‘When you come home, he’s probably going to be crawling.’ And when I FaceTimed him yesterday, he said, ‘But I just want him to walk. Is he walking yet?’"

Two words: cuteness overload. Sounds like Isaac is the best big brother ever! "He’s just really, really excited and he’s doing a really good job being a big brother," Kailyn continued. "So, I’m happy to have my boys."


We're sure Isaac and Lincoln will grow up having a super close bond, and the best part is that fans get to see their relationship develop on Teen Mom 2's upcoming Season 5B when it premiers on July 16!

Are you surprised to hear how well Isaac is adjusting to being a big brother? Considering that he had his mom all to himself for four years, we're pretty impressed by his sweet nature and willingness to welcome Lil' Linc into the fold.

Additional reporting by Josephine Cusumano