A couple of my regs are married or have partners.
In both cases they know what is going on, one in particular gets off over his lady being fucked by others, well what ever rocks his boat. The other also knows, and seems comfortable/ like it, although its not a conversation I've discussed with the WG concerned.
For me, I quite like the married / committed ladies, they have their lives, I have mine, and no concerns about any crossovers.
Yes, we discuss kids etc, just like anyone in any other walk of life, everyone seems happy ! + I do get great service from these ladies.