You’ve missed the point. There’s no expected commitment, they are both of the same mind. They both feel like it would be ok if it doesn’t last. It’s because they share the same feelings that they continue to work well together, and the relationship lasts.

This is basically how me and my girlfriend’s relationship started off. No pressure, if it’s not working we’ll call it off and go back to being just friends.

We’ve been together for 15 some odd years, and we have 2 kids.