Chelsea Houska and Kailyn Lowry have been friends for years, so why wasn't Lowry at Houska's wedding to Cole DeBoer?

Over the weekend, Houska married DeBoer after just over 2 years of dating and not one of her Teen Mom 2 co-stars were present.

"After Chelsea announced that she'd gotten married, some people noticed that Kailyn Lowry, who's always seemed to be very close to Chelsea, wasn't in attendance. It was pretty odd, since Kailyn's always been so quick to take a trip literally anywhere, but Chelsea took some time from her post-wedding bliss to address the situation," The Hollywood Gossip explained to readers earlier this week.

Following her marriage, Houska told her fans on Twitter that her longtime friend, Lowry, would be attending a second ceremony next year, as will several other friends.

“So as most of you already know, yesterday Cole and I got married in a tiny ceremony just with our parents and siblings,” Houska explained to fans on Twitter, according to a report by In Touch Weekly on Monday. “Next year, once our baby is here and able to be a part of it, we will have our big wedding ceremony and reception with our friends/extended family.”

Chelsea Houska and her family are currently filming the upcoming season of Teen Mom 2. No word yet on when the series will return to MTV. To see the first photo of the reality star's wedding dress, check out the video below.

Tags: Chelsea Houska Teen Mom 2 kailyn Lowry Cole DeBoer MTV Reality TV