I was really surprised to discover that some people don't assume that their relationship is exclusive until they've had a conversation about it. Is non-monogamy so common now that it has become the default option? I've never had an "are we exclusive" conversation with anyone and I find the idea of the default relationship being an open relationship quite unpleasant. Is this something American which is becoming normal here? Or is it an OLD thing which is becoming more mainstream?
In these situations, what would your assumption be?
Situation1: Molly and Arthur join the same climbing course. They learn to climb together, start to meet up at weekends with their other climbing friends to go on climbing trips and have become friends over a period of 2 months. Then one day Arthur asks Molly out and Molly says yes. They meet up for dinner some other date once per week for a month. Then Molly finds out that Arthur is seeing another woman. Do you think Arthur is cheating on Molly?
Situation 2: Molly and Arthur match on an online dating site. They meet up for a date once per week for a month. Then Molly finds out that Arthur is seeing another woman. Do you think Arthur is cheating on Molly now?