I'd like to remain pleasant about it. I only become unpleasant when people make false claims about us, especially the ones that make claims about me directly to me. I do find that unpleasant, and such posts get what they deserve. (O, clearly not as much as the deserve, there are restrictions here...)
Can I remain pleasant here today? Let's see...
Are we liars? If we just don't like God, but claim he doesn't exist that would be a lie, would it not?
This is another trope about us, that we have some pain connected to religion deep within us. Unfortunately religious writers have been impugning non-believers for millennia.
I feel bad for your friend. Those kinds of occurrences are often taken by believers as "tests of faith" and for some when they have reasons to question some aspect of faith other parts fail upon examination.
Let's be clear, atheists are the people that don't believe in any god, not yours, not anyone elses. For those of us who used to believe, there are many paths out of faith, but we are those who don't go back. For me it was the obviously human nature and unrealistic claims of scripture that lead me to realize that Christianity was literally unbelievable.