Hi and welcome!
Originally Posted by Stonecrow
. . . we added "D" who seemed to want to be my friend, interested in K as a love. Now over 2 years into it we are stuggling, all living in the same small house. D knew K was polyamorous and that he was my commited partner before it all started, but has never gotten comfortable with poly.
Like a spice to soup, you "added" her!
Okay, I'm assuming D is a woman. Is she a platonic friend with you or a lover to both you and K? I find it interesting that she was never comfortable with polyamory yet has stayed in the relationship for two years and even moved in! Do you know what her issues are? You say "we" are struggling, so I take that to mean all of you are, not just D. What is the focus of the struggle?