Teen Mom OG
Catelynn returns home from the rehab.Facebook/Teen Mom

In this week's instalment of Teen Mom OG, Maci Bookout and Taylor McKinney hit a roadblock in their relationship and wonder if they should get married. This is the crux of Season 6 episode 6, titled, Second Guessing.

Maci and Taylor are one of the cutest couples on the MTV reality show, but the latest episode will capture them in situations that are difficult and emotionally taxing. The synopsis (via TV Guide) indicates that Maci and Taylor wonder if they should have a wedding so soon. 

Fans of the show will remember that Maci and Taylor bought a house in last week's instalment and dealt with financial problems related to their third pregnancy. To be sure, Maci did state that she was overwhelmed with the planning. And the promo for Season 6 episode 6 reveals that Maci's ex-boyfriend Ryan has his own plans for their wedding.

The video clip for the upcoming instalment of Teen Mom OG captures a conversation between Ryan and his parents. Although Ryan's dad asks him to get back into the dating game, Ryan reveals that he intends to attend Maci's wedding. Nevertheless, he might not be able to if the wedding gets postponed. 

Meanwhile, Farrah Abraham and Simon Saran meet celebrity therapist Dr Jenn for relationship advice. The two have had several disagreements in the past few episodes and their session with Dr Jenn makes them realise if the relationship is important. 

Teen Mom OG Season 6 episode 6 airs at 9 pm EST on Monday, 19 September on MTV. You can stream the episode via MTV's website