"I hope that Nikki and Artem are protecting their heart, and I hope that, more importantly, their son is okay," Burke tells PEOPLE

Cheryl Burke weighs in on the "sad" situation going on with friend and former "Dancing With the Stars" pro Artem Chigvintsev and Nikki Garcia.

This article contains mentions of domestic violence.  A lot has been happening in Artem Chigvintsev's life, following his arrest last month. While his wife, Nikki Garcia, has filed for divorce, recently,