Smith denied any such actions. Even if Emma knew anything, she denied any knowledge of it and on her deathbed testimony she stated "no such thing as polygamy, or spiritual wifery, was taught, publicly or privately, before my husband's death, that I have now, or ever had any knowledge of...He had no other wife but me; nor did he to my knowledge ever have"

I choose to believe the testimony of both Joseph and Emma against polygamy. Many folks don't realize that there is conflicting testimony and accounts of Joseph's involvement with polygamy from those who later practiced it or claimed to be plural wives to Joseph after his death. Two women even testified in the 1893 Temple Lot Case in Missouri and were not found to be truthful. For the sake of argument let's say Joseph did hide his actions from Emma. Joseph would have disregarded the direction in LDS D&C 132 (introduced Aug. 1852)(canonized 1876) which states he had to get consent from his first wife to take others. He also would have be going against the 1835 Doctrine and Covenants original 101, BofM and other revelations to the church on Monogamy. LDS D&C 132 has conflicts also. It states that Joseph needs to prepare his heart to begin practicing polygamy and then states that Emma must accept those women already given to Joseph. It states that God justified David and Solomon not only in polygamy, but concubines as well. BofM states in Jacob 2 that these were an abomination. The Bible never alludes to Issac or Moses being polygamists.

Absolutely, yes he did. "Personal Writings of Joseph Smith" Dean C. Jessee 1984 pg. 566 A letter to Sarah Ann Whitney a new plural wife, " the only thing to be careful of is to find out when Emma comes, then you cannot be safe; but when she is not here there is the most perfect safty. only be careful to escape observation as much as possible... This is only a fragment of the letter. Also read " Emma Smith Mormon Enigma" in this book both of Joseph's sons David and Alexander interview some of Joseph's plural wives, and discover the truth regarding their father, another good book is " In Sacred Lonliness" by Todd Compton.

No, Emma was bisexual and was getting on with the other wives as well

SHORT ANSWER: Clearly at first - and the other Latter-day Saints as well. However this changed later in Emma's case after she was presented with the revelation that's now known as D&C 132 (http://scriptures.lds.org/en/dc/132). LONG ANSWER: In fact, the whole Temple System was designed to swear Polygamists to secrecy and keep the whole system a "sacred secret". http://www.concernedchristians.com/index.php?option=com_fireboard&Itemid=42&func=view&id=79200&catid=10 Joseph even went so far as to publicly lie on the whole matter from the pulpit. (see http://www.concernedchristians.com/index.php?option=com_fireboard&Itemid=42&func=view&id=78818&catid=522) However, this changed after Emma was presented with D&C 132 by Hiram Smith (Joseph Smith's Brother). Then it's clear that she was an accomplice. Here's what William Law (who was First Councilor at the time) had to say about this period: Q: What do you remember about Emma's relations to the revelation on celestial marriage?" WILLIAM LAW: "Well, I told you that she used to complain to me about Joseph's escapades whenever she met me on the street. She spoke repeatedly about that pretended revelation. She said once: "The revelation says I must submit or be destroyed. Well, I guess I have to submit." On another day she said: "Joe and I have settled our troubles on the basis of equal rights." * * * Emma was a full accomplice of Joseph's crimes. She was a large, coarse woman, as deep a woman as there was, always full of schemes and smooth as oil. They were worthy of each other, she was not a particle better than he." http://www.concernedchristians.com/index.php?option=com_fireboard&Itemid=42&func=view&id=75826&catid=522

D&C 132 makes it clear that Emma was to help choose plural wives for Joseph, so she knew he was practicing polygamy. OTOH, I'm positive Joseph didn't tell Emma everything. It would have been foolish, for example, to recount sexual encounters, or compare Emma with any of his other wives.