Like many people, they had a relationship that became bad and they divorced. He is reported to have had numerous extramarital affairs, also. This article is 24

Like many people, they had a relationship that became bad and they divorced. He is reported to have had numerous extramarital affairs, also. This article is 24 years old https://www.nytimes.com/1996/11/06/arts/dark-side-of-einstein-emerges-in-his-letters.html https://www.nytimes.com/1996/11/06/arts/dark-side-of-einstei... - all of this is well-known. He supported Mileva and the children from that marriage throughout his life. Everybody has flaws.