Who do you tell you are atheist?

[dyresand]

Alright, hopefully this isn't already a topic somewhere. I couldn't find something recent about this, so I figure I'll make a topic.
I'm wondering who you guys decide you will tell you are atheist.
I remind my mom when she is harassing me and any friends/ acquaintances/ strangers I'll tell pretty openly. But recently I've been wondering about telling a significant other's family or your boss or something like that- where what they think of you could end up putting you at a "disadvantage".
For example, my current boyfriend's family is pretty religious (not like super crazy religious, but religious enough that I think my atheism could be bothersome). I'm worried at some point the topic will come up and I'm not sure how to respond. A part of me thinks it is best to stay on their good side and just lie, but the other part of me is sassy and doesn't give a fuck (and would frankly be a bit embarassed to be thought of as a Christian).
[I'm not looking for advice on what I should do, I'm just curious on who you guys are open to telling]

hire a mariachi band and i'm pretty sure they wont get mad due to the showmanship