Lisa’s rep told People.com, "Albert proposed to Lisa on Christmas Eve.”
Niemi, 57, and DePrisco, 58, met through mutual friends at a birthday party for Niemi and have been dating for a year and a half.
In 2012, Lisa wrote an inspirational tell-all book about Swayze and his battle with cancer called "Worth Fighting For: Love, Loss, and Moving Forward.”
She told “Extra’s” Mario Lopez at the time, "Hopefully our experience going through that, that whole journey, can offer people some hope… All of us are faced with loss and there's incredible gifts that can be yielded from the situation. It can bring people closer than ever before, and in learning how to die, you really learn how to live."
Actress and dancer Lisa Niemi, who was married to Patrick Swayze for 34 years before he died of pancreatic cancer in 2009, is engaged to jeweler Albert DePrisco.