Why do Shia believe in Muhammad (Peace Be Upon Him) but at the same time question his honor?

I am interested to get the answer to this contradiction which was made by almost all Shia. Actually, I asked many Shia people to explain to me and to solve the following belief contradiction: Do you believe in Mohamed(SAWW) as a prophet? They answered me yes. And What about Aisha(May God Be Pleased With Her) ? They answered me: She is a wife of our Prophet ? I ask again: Do you love Mohammad (Peace Be Upon Him) ? They said: Sure, we love him. Do you love his wife **Aisha** ? To this, they are mostly in silence or say "No". When I asked the reason for it, they answered : She was a cause and temptation in the killing of Al-Zubair. By the way, they believe in [Battle of the Camel]. May I get an explanation of contradiction in the following question; I ask any of shia people : Assume I'm your friend lover to your heart? Assume I say to you: your wife is a prostitute? What about our friendship? Does our friendship still as it were? Now the main interesting question to me here is : **Why Shia think they believe in Muhammad (Peace Be Upon Him) and at the same time they stab his honor** ? **Addendum** Aisha, (May God be Pleased with Her), did not betray the Messenger (Peace Be Upon Him) as his wife, because she always followed his path (teachings).