Albert Einstein divorced his first wife and eventually married his cousin. Before that marriage, he hit on the cousin’s daughter, from a previous marriage. The mom was pretty cool with it, and they probably had threesomes. Einstein was a horn dog!! One would think he was from Kentucky.
Anyway, his wife had to: Clean his room without saying a word, bring his meals to his room, stop talking the moment he told her to, and not interfere in his escapades.
See how lucky you ladies are?
http://www.pbs.org/opb/einsteinswife/milevastory/married.htm