Matthew Rosenberg was in a relationship with Haylie Duff for 14 years before they split. Rosenberg started dating Duff in 2012, and he proposed two years later. While they never got married, the former couple stayed together and even expanded their family. "I would love to have a huge family," Duff told Us Weekly exclusively in 2017. "I feel like it was just us growing up and if we had our choice we would have these big, crazy families." Matt Rosenberg and Haylie Duff Tiffany Rose/WireImage Duff gave birth to her and Rosenberg's first daughter, Ryan, in May 2015.