Everything You Need to Know About Ashlee Simpson's Fiance, Evan Ross

Jan. 14, 2014 -- Evan Ross and Ashlee Simpson have announced their engagement with an intimate post on Twitter.

"My baby love and I are ENGAGED!!! Hallelujah Hawaii !!!!!" Simpson, 29, wrote.

Meanwhile, Ross, 25, added, "The love of my life said YES!!!!!!"

But who is Ross? Here are a few stats.

REAL NAME: Evan Olav Naess

AGE: 25

WHY HE'S FAMOUS: Not only has Ross had several acting roles (he was most recently seen in the VH1 biopic "TLC," and has roles in "The Hunger Games: Mockingjay," but he sings too. Oh, and his mother is Diana Ross.

IN THE PAST HE'S BEEN LINKED TO...: Aubrey O'Day, Hilary Duff, Lindsay Lohan and Hayden Panettiere

WHEN HE MET SIMPSON: The couple first stepped out together last summer, but got serious pretty quickly. At one point, he even accompanied her to a work function in New York City. "Evan was supportive and stayed by her side," a source told ABC News at the time. They're a very cute couple!"

HE'S MET HER SON: This will be the second marriage for Simpson, who has a 5-year-old son, Bronx, with ex-husband Pete Wentz. However, it seems that Ross is excited to take on a bigger role in the boy's life. Over the holidays, he tweeted, "Can'twait! Christmas with my baby @ashleesimpson and Bronx spending xmas with mom.! Can'twait! It's a family affair!"