..about Darcy who was rejected by Lizzy and he knew from her that she is partial to Wickham and We know that he is reserved and proud ,so why did he confide Lizzy to his sister's secret? What makes him sure that she will not tell anybody? or to believe him? I see that quite a risk to do so especially for Lizzy who showed him hatred. And more , even if he didn't mistrust her, he must at least afraid if any of the particulars to reach her lippy mother by mistake. I don't think he did right here. May be if he gives himself more time to trust Lizzy. Also I don't think Georgiana wants anyone to know, even Lizzy.