Amber Portwood's fiancé recently underwent a lie detector test and according to the Teen Mom OG star, he may have passed.

As the sixth season of the MTV reality series comes to an end, fans may be in for a big surprise.

"I wasn't against it because I guess I kind of felt like I wanted to know," Portwood told Us Weekly magazine of Baier's decision to take the test on Thursday.

"I was happy with some of the results ... it clarified some things. I think people will actually be shocked with some of the results. Some of them actually pleasantly surprised me and made me feel amazing and I think it [will make] a lot of people look really stupid that [have] always been talking s**t," she said

"It still doesn't change the other problems that we had in our relationship and things that happened in the past like lying," Portwood continued. "So there's a lot that needs to be worked on there for us to even think [about being] together."

Portwood and Baier aren't currently together, but when it comes to the future, there's a possibility that they will reconcile. Although, Baier will have to mend his behavior if Portwood is willing to reconcile.

"He hasn't been the best," Portwood admitted. "He's just met a person that doesn't deal with his s--t. But he's also met a person that he really is in love with and doesn't want to let go."

"At this point, I told him it's pretty much up to him to save this relationship," she added.

To see more of Amber Portwood and Matt Baier, tune into the season finale of Teen Mom OG Season 6B on Monday night, June 26 at 9 p.m. on MTV.