Anyone interested in sharing their coming out story as an atheist?

I am a 20 F college student who is currently deciding when and how to tell my family that I am an atheist. For background, they are Catholic and not just the cultural Catholics who don't attend mass. They take their religion quite seriously and would be extremely upset it I ever moved in with a guy somewhere down the line or raised a child not in the faith.

I really think hearing other people's stories could give me some comfort. I have been hiding this for so many years, and I am coming to the realization that within a few years, I will have to tell them.