I think all men aren't liars. Some men liars and some women too.

Telling lies is a fault in a boy, an art in a lover, an accomplishment in a bachelor, and second-nature in a married man.

I wish I knew this) Maybe it's in their genes.

because you think they are liar

If all men are liars then your father too is a liar.  I feel so sorry for you.  Men and women can be liars.  You just have to choose the individual more carefully.  That's all to it.