I think of myself as emotionally promiscuous (or emotionally polyamorous, as it were.) Regardless of whether I'm monogamous, poly, or celibate I'm going to love the people I love truly, deeply, profoundly.
I imagine that all human beings are inherently emotionally promiscuous, and that it's only because of moral strictures and fantasies/delusions of romantic love that people get stuck in a paradigm wherein loving more than one person "romantically" is a big no-no.
Further, I believe that all relationships are on a continuum of intimacy, and that the boundary between sexual and non-sexual relationship is another artificial, arbitrary, and reactionary norm that we'd be better off without.
So, yes, I absolutely believe in non-sexual expressions of polyamory.