Sarah Pratt
Sometime in late 1840 or early 1841, Sarah Pratt said that Joseph Smith propositioned her twice, but unlike Lucinda Harris, she turned him down. Sarah reported Smith as saying:
Sister Pratt, the Lord has given you to me as one of my spiritual wives [somewhat like a concubine, or a wife for the night]. I have the blessings of Jacob granted me, as God granted holy men of old, and as I have long looked upon you with favor, and an earnest desire of connubial bliss, I hope you will not repulse or deny me.
This is not a marriage offer.
Years later Sarah Pratt described Smith's modus operandi that he used on her and a number of other women:
Joseph did not think of a marriage or sealing ceremony for many years. He used to state to his intended victims, as he did to me: "God does not care if we have a good time, if only other people do not know it." He only introduced a marriage ceremony when he had found out that he could not get certain women without it. I think Louisa Beeman was the first case of this kind.