I ran across this possibly helpful article last year sometime: A Dialog between a Polyamourous and a Monogamous Person
I don't know how representative of monogamy in general the mono half of the conversation is; I suspect she's much more petty and possessive than would be typical. I found it a fascinating read because it showed such a different mindset. Even though I assumed for many years that I was monogamous and now still don't entirely buy in to the "hardwired for poly" vs. "hardwired for mono" school of thought, I found the thought processes of the mono half of the conversation quite strange. Again though, that could just be because the individual involved is a non-representative example.