The news comes after Michelle accused Patrick of cheating in a now-deleted tweet.
On Thursday, she released a statement to People, saying, "To say that I am totally devastated doesn't even come close to describing how I feel for myself and for my family. The rug has been completely pulled from underneath me and now I must figure out how to move forward. With such small children, I ask for privacy and kindness."
The stars, who wed in 2019, are the parents of son Rhys, 4, and daughter Willie, who was born in February. Michelle is also the mother of a daughter, Owen Isabelle, 17, from her first marriage.