What percentage of MLC'ers have someone else?

[Silent Chrleader]

From what I've read (and I've read a LOT about MLC), and OP doesn't have to be part of it, but it's been my experience that there pretty much always is an OP in some form.

My H and I had only ever been with each other. Never even dated anybody else. Both of us pretty shy introverts. I believed H up until my S17 told me the truth (which H had given to him in a drunken confession).