She didn't understand personally
how it was possible to love more than one, but she recognized that it is the case for me, and said that she was happy for us as as long as we were happy. Which we are!
I loved your story! Sent it to Mr. A, who has asked that I send anything interesting in his direction. Not hinting to him, but it gives a good perspective on how the "other man" can come out to his family, should that be something he decides to do.
Because I'm lazy and don't want to do the math, how long after dating RP did you come out to your family?