Credit: Twitter

Teen Mom 2's Leah Messer is the most blessed mountain mama in the world. This West Virginia native broke our hearts into a thousand pieces when she split from her OG baby daddy, Corey Simms, but after a tragic few months of wearing a weird blonde wig and hating on pickup trucks, Leah met the one and only Jeremy Calvert. Despite this one really awkward time when Leah kinda-sorta rejected Jeremy for Corey, these two have been head-over-heels since they first laid eyes on each other!

Nowadays, Leah and Jeremy are happily married and have a child of their very own, but that doesn't mean Jeremy isn't an amazing stepdad to Leah's previous kids, twin girls Aleeah Grace and Aliannah Hope!

Ali and Aleeah are super close to Jeremy (despite the fact that he spent the better part of this fall hanging out with a bunch of aliens in Roswell), and this dude took it to Twitter to wish them a happy fourth birthday on December 16. "Happy birthday girls I'm the luckiest stepdad in the world," Jeremy tweeted. "Love ya both so very much !!!"

Aw, this guy! Leah is so lucky to have found a man who's committed to her daughters, and the best part is that Corey also seems like he's also a huge fan of Jer. These hunks are often photographed together at family events, and Corey (who's remarried) seems grateful for Jeremy's presence in his daughter's lives.

Do you think Jeremy is a good stepdad? We can't wait to see him in action when Teen Mom 2 returns for its fifth season on MTV!