Can my husband read my conversation with my mon on itunes?

I have iphone 5 and i talk and chat to my mom about huaband and mil issues quite frequently through facebook and whatssapp on it. Is it by anyway possible that my husband can read my fb msgs even deleted ones through itune account or by any other way. I asked him mang tumes but he denies it everone but i have strong guy feeling that he does somehow reads my msgs the way he mentions few stuff.

Almost everything is possible on a device. You need to ask him directly.
You are doubting him, doubting that he is doubting you because of he has to check your messages.
And you are asking on an internet forum can he read my messages. You are talking about issues related to husband and mil with your mother. What exactly are you doing? Do you want to spoil your marriage? Have you heard of the word 'confronting' someone, asking your husband directly? Conversation? Discussion

Not through itunes