Our perspective of what is monogamy or polyamory are varied, some may view polyamory as multiple commitment, while other like
@Tee Kay view it not necessary have to be like that. Actually when I read Tailess or your respond I'm come to realization that we really talking the term polyamory or monogamy in a very different term, for me it's a mutliple commitment bonding and love, not solely intercourse relation.
In my perspective being commited with my partner mean that we are bond with each other, hence you may say also we are belong to or for each other, for instance I stop watching Captain Sharpe because it annoyed her greatly she think the amount of cleavage in that movie is too much, she also argued that I can learn while getting myself entertained about historical drama on Napoleonic era watching different film (btw Jung, have you watch duelist?, you should watch it), I don't find her reaction annoying at all, I thought it was cute, and I'm happily willing to be her possession (I never think it that way though) or whatever it is, and the way we see love is a feeling that pulled us romanticly to each other, and we may strengthen and solidified the bonding with commitment (marriage). Hence from my perspective jealousy is always part of the game if you are falling in love with someone, it's natural within us and I don't view the jealousy within me as something bad, and when someone that I deeply in love jealous about me, well, that's a bliss, cannot ask anything better than that
edit: btw sorry for my mess up English, I edit and fix some of it, maybe as more time I spend in this forum it will getting better (even though I never ever really have a good talent in language)