Einstein developed a special interest in a fellow student, Mileva Maric. He wanted to marry her, but their families did not agree. However, later they married. Both were intelligent and ambitious. They had two sons. But after some time, their professional ambitions disturbed their family life. Perhaps their interests clashed. Their family life, unfortunately, was not successful. After many years of differences and constant fighting, they finally got divorced. I think their professional rivalry was the main reason for their troubled family life.