I’ve been with a lady for two years and recently started dating her new boyfriend. We all consented to the relationship and so far, it’s going good. I’ve also heard from some people though who used to date many people that it didn’t work out so they decided to date monogamously.
It’s definitely been working out for me, for years now. I have two boyfriends, they get along well and also both date other people. There were a few growing pains of course. Overall though, smoother than expected!