Sheryl Sandberg has found love again after going through the "completely unexpected hell" of husband Dave Goldberg's sudden death five years ago. The Facebook COO has announced her engagement to Tom Bernthal, founder of a strategic consulting agency, the New York Times reports. Sandberg, 50, has two children, and Bernthal, 46, has three. A source tells People that Bernthal—who was introduced to Sandberg by her former brother-in-law—presented Sandberg with a ring featuring five diamonds to represent the five children when he proposed during a hike over the weekend. "Engaged!!! Tom Bernthal, you are my everything. I could not love you more," Sandberg said in a Facebook post. "You're wonderful for each other and I’m so happy for both of you," Mark Zuckerberg posted in response. (More Sheryl Sandberg stories.)