JesusWarriorGirl said you're living a lie. And I'm afraid that people everywhere, right, left, and center, all over the place, live lies all the time; it's just a fact of life. Furthermore, there are people everywhere, right left and center, who believe that their peers are living lies when that may or may not be the case. Pick any two people with very different religious beliefs, for example. If you ask them, and they're perfectly frank and honest, the truth is that they each believe that the other is living a lie. Similarly, any believer in God would have to admit they believe atheists are living a lie, and honest atheists would have to admit they believe God-worshipers are living a lie. So what do we do? I think as a society we have to admit that though it's better to live the truth than to live a lie, there will still be all kinds of people everywhere living lies. But we should still exchange ideas with the hope of getting to the truth. And that's why, I'm afraid I can't say that JesusWarriorGirl's comment was inherently offensive, or awful, just blunt.
If you'd like to share your perspective on why you disagree so strongly with her, I'm all ears. (I wouldn't be surprised if JesusWarriorGirl was also willing to listen.) If we do have a discussion though, I'd rather do it in a more private chat, far from any potential trolls.