Get Him to the Greek 2

Aldous Snow makes a funny comment that reminds me so much of the 1960s and 1970s. He is asked if he is faithful to his girlfriend and he says something like, "Oh. I sleep with other women but I tell her about every one." My wife and I laughed so hard we almost fell off our seats because we knew so many people who lived lives with this philosophy during the 1970s and 1980s. In other words you could sleep with who you wanted as long as you told your main squeeze who you had slept with.

But people who lived according to these rules more than a couple of years usually wound up being single. At some point everyone I know who stayed together longer than a couple of years became monogamous.