A family trip to drop off their daughter turns incredibly awkward when Gary's new lady suddenly appears

By Lanford Beard
March 30, 2015 12:00 PM

On Monday’s Teen Mom, even as Amber Portwood takes her daughter to school, she’s the one receiving life lessons.

Relishing her freedom after a 17-month prison sentence, Amber still struggles with accepting the changes that happened while she was incarcerated.

In an exclusive preview of the next episode, Amber and her ex Gary Shirley drop off their daughter Leah at school. What seems like a happily family moment soon becomes tense when Gary’s new girlfriend (with whom he is expecting a child) turns up at the school.

Let’s just say silence is not always golden.

RELATED: Teen Mom OG‘s Amber Portwood on Life After Prison and Staying Sober

Portwood previously told PEOPLE that navigating parenthood with an ex could be challenging.

“We’re co-parenting the best that we can,” she said. “It’s not perfect, and he still gets on my nerves, but we’re happy with the people we’re with.”

Teen Mom OG airs Mondays (10 p.m. ET) on MTV.