It was the success of Boris' Greenhorn scripts and Bessie's feature acting in them that led to Bessie being overworked and Boris taking the money and philandering. Bessie wanted an accounting of the money and couldn't find it. Boris Thomashefsky began and carried on a long-term affair with Yiddish actress Regina Zuckerberg (1888-1964). Regina began her artistic career at the Jewish Theatre of Lemberg, Galicia (Austro-Hungarian Empire, now Lviv, Ukraine) and had in September 1911 immigrated to the United States with her husband, actor Sigmund Zuckerberg. She was the leading actress in a number of theaters by Boris Thomashefsky and was a member of the Hebrew Actors' Union, which was the union of Jewish actors in the United States. Regina modeled herself on Bessie in dress, speech, style and acting—except that she was 15 years younger. Boris's affair with Regina and financial mismanagement led Boris and Bessie to separate in 1911.