Here's the original email sent to me: Just for reference.
"I apologize for being so slow to respond. I am overwhelmed with work. But to answer your question briefly. I certainly think you can feel deep attachment to more than one person at a time. We see this all the time. You can be attached to your work, your family, your children, and more than one lover. The attachment system doesn't seem to focus on just one person. Same with the sex drive. You can feel lust for several people at a time. But I don't think you can feel INTENSE romantic love for more than one person at a time. This particular brain system is associated with deep and intense focus on one individual, and people tend to get quite possessive too."
Playing the Game of Life with Monopoly rules.
Monogamy might just be in my genes
Poly Events All Over