By Lindsey Bahr
January 13, 2014 at 12:00 PM EST

Ashlee Simpson, 29, and Evan Ross, 25, are officially engaged.

Ross, an actor (set to appear as Messalla in The Hunger Games: Mockingjay) and son of Diana Ross, announced the news on Twitter, Monday with a sun-soaked photo of the two.

The love of my life said YES!!!!!!

— evan ross (@realevanross) January 14, 2014

Simpson, who was previously married to and had a son with Pete Wentz, tweeted: “My baby love and I are ENGAGED!!! Hallelujah Hawaii !!!!!”