Sara Gilbert, the Emmy-nominated star of Roseanne and The Talk co-host, revealed to People magazine that she and her partner of a decade, Allison Adler, are splitting up. They have been together since 2001 and have two children together. It has been a bad week romance-wise for the the Gilbert family. Sara’s sister, Little House on the Prairie‘s Melissa Gilbert, filed for divorce from her husband, Bruce Boxleitner, on Thursday.