Amber is set to star in the forthcoming series, Teen Mom Original Girls, and Matt popped the question in front of the cameras.
Last week, in a new trailer for Teen Mom Original Girls, fans saw Amber being presented with a sparkling ring in a box.
And now, Amber has confirmed that she accepted Matt's proposal!
Speaking to MTV News, Amber admitted: "We are very happy. I've never felt this way about somebody else in my life."
Amber was just a school girl when she first appeared in front of the cameras on Teen Mom's predecessor, 16 & Pregnant.
The cameras watched as she and then boyfriend, Gary Shirley, welcomed their daughter Leah into the world. The couple's highs and lows were later documented in spin-off series Teen Mom.
Amber has definitely had a rocky ride over the years. In November 2013, she was released from prison early having served 17 months of a five-year sentence for violating probation following drugs charges.
The reality star chose to head to prison, rather than comply with the rules of a court-ordered drug rehabilitation programme.
Amber is now getting her life back on track and shares custody of Leah with Gary. In the new series of Teen Mom Original Girls, the pair will join former co-stars Maci Bookout, Catelynn Lowell and Tyler Baltierra, and Farrah Abraham for a catch-up.
The series is set to air in the US later this month, however MTV UK are yet to confirm a date for fans to catch it here.
Watch the trailer for Teen Mom here: