My wife and I had our first MFM experience and had a blast. She wants to try it again, and I'm down as well. However, she said one thing that surprised her is how much she liked it and how much she'd be interested to keep in the LS, when we originally thought this would be a "one and done" thing.

I'm not totally opposed to it, but this kinda struck a chord as I'm a natural commitment-phobe. It scares me to think that this becomes part of our identity (no offense to anyone that does consider this a major identity for them).

Anyway, I am overthinking and not rationally, which I'm prone too. So I have been thinking a lot about what makes a marriage, a marriage. I've always considered "sex with one person forever" to be a factor in that, and now my perception is changing. So I'm curious what you all view as the factors that makes your marriage special and important, even though you have opened up sexually to new partners?