Amber unveiled quite the bombshell during this week's episode of "Teen Mom OG": She had been communicating with a Boston native named Matt for six months and kept their special bond from show producers. But after A and M met in person after chatting long-distance, there was no hiding their love any longer.

"The relationship me and my fiancé have right now is completely different than what mine and Gary's was," Leah's mother reveals in the "Teen Mom OG: Featured Moment" below (Note: this interview was conducted after her engagement was revealed).

And right out of the gate, Matt proved to be a great support system: After Amber received a text message from her ex that upset her greatly, he called a meeting with L's dad about the situation.

"To see my fiancé sitting there, being mature, taking control and calling him out actually and saying, you know, 'I don't like you calling her a bitch' and things like that -- I don't have other people that see that stuff," the 24-year-old explains.

How did Amber feel about Gary's behavior during the guys' sit-down -- and what does it mean for her to finally move on from the father of her daughter? Watch the video to find out, and be sure to stay with "TMOG" every Monday at 10/9c.