Consider the question. Farber was born in Moscow, Russia, but moved to Australia in 1986. His family is Jewish. He began dancing at the age of 13. When he was 17, Farber won the Australian Youth Latin Championships twice and represented Australia at the World Latin Championships. He was also featured in the 2000 Sydney Olympic Games closing ceremony and featured in the second season of the Australian Dancing with the Stars. He was also an original cast member of Broadway production of Burn the Floor. He dated fellow Dancing with the Stars member Emma Slater from 2011 to 2014. In December 2015, Farber made a post on his Instagram account confirming that he and Slater were back together. On October 4, 2016, Farber proposed to Slater during a broadcast of Dancing with the Stars after performing a dance together. The two are now engaged on February 2, 2018 Farber and fiancee Emma Slater announced that they were expecting their first child.

Who is sasha on dancing with the stars engaged to?
If the answer is 'Emma Slater'; explain the reasoning:
To answer this question, we should know that: The two are now engaged on February 2, 2018 Farber and fiancee Emma Slater announced that they were expecting their first child.