I don't really agree with you. I think most people are wired like woody( monogamy) however not all people are. If you are going to date someone then it's best you both have a similar outlook on things. That's how Kyle finds women who are okay with him playing a boyfriend role but not be in a monogist realtoonship. It's all about communication because why date someone who doesn't have a similar outlook on life. I would agree it is less common but not impossible to find.

I have a real life example. Me and my boyfriend tried the open relationship like 2 years ago. I'm a girl and I suggested we try in the first place. I'm in my early 20's things were getting series between us and I decided I didn't wanna break up but I wanted to experience sex with more people ( men and women). We discussed it at length and decided to go for it. In the end, I was the only one making advances on this decision and didn't have the heart to pull through. So here we are 2 years later in a happy monogist relationship.

Also I'm at work and I'm using my phone so I apologize for shit formatting