Assuming that you don't cheat on your SO, how much of your desire not to cheat is out of fear of getting caught/hurting them and how much of it is a genuine disinterest in other people?
For those who are single/non-monogamous.
What is your criteria for whether or not you will get together with someone (either relationship wise or just sexually) in regards to their committed relationship with someone else? Are there circumstances when you would have sex with someone who was in a monogamous relationship with another person? Would it matter if you knew the person they were in a relationship with?