The two seemed on casual terms, leading me to wonder how long this limousine had been in her life, and whether she had ever seen the inside, and if so, whether she climbed in the front seat or the back, and if the front, did she help navigate, and if the back, did she change into a fancy dress and sip champagne - or just sparkling wine.
...it is foreign to a man's nature to go on loving a person when he is told that he must and shall be that person's lover. There would be a much likelier chance of his doing it if he were told not to love. If the marriage ceremony consisted in an oath and signed contract between the parties to cease loving from that day forward, in consideration of personal possession being given, and to avoid each other's society as much as possible in public, there would be more loving couples than there are now. Fancy the secret meetings between the perjuring husband and wife, the denials of having seen each other, the clambering in at bedroom windows, and the hiding in closets! There'd be little cooling then.
Polyamory is differentiable from some other forms of nonmonogamy (including adultery) in that it is future-oriented. Poly relationships are not located solely in the moment, but have intentions (though perhaps tacit and vaguely defined) of at least adding to a base of experience possibly so far as signifying a life-long and emotionally attached commitment.