Here are some things that I’ve written that talk a bit about that. I was pretty liquored up, in part to get up my courage and in part because I could always blame it on that later, but my husband was actually really receptive. We then read a book called Opening Up and had several weeks of ongoing conversations before we ever even looked for anyone else. Focusing on what it might bring to your relationship rather than just to you alone is a great way to do it. Even people who don’t see others together have often spoken about how it enriches their relationship because it ups the intimacy to have this level of vulnerability and complete honesty. You do have to go through a certain amount of deprogramming from monogamy thinking, however, because it’s a very different mindset. That’s where the book can help. It also gets you thinking and talking about some of the things to consider.
And this might be useful as well. It’s easier to link these than trying to type it all out again here.
Hope this helps! 😘