My husband is essentially an atheist. Ok more like an agnostic - so he believes there is a higher being but choses to ignore it and not pursue it and wants to believe that all religions are true.
I never gave it much thought before we got married. I was in love. Our priest said that everyone is spiritual and that he did not have to become a Catholic but basically was welcome into the faith whenever he was ready.
Being married a year and a half now, and me becoming stronger in my faith, it can be hard. NFP is hard with a non Catholic, let alone a non believer! Going to mass every sunday is more difficult when your partner isn’t accustomed to going.
In order to get married in the church, the atheist will have to agree to raise their children Catholic. There are a lot of things the couple needs to talk about before getting married.
The way I see it, everyone has a cross to bear right? And even if both partners were Catholic to start with, one might drift. Or the atheist might convert. You never know. So if all other things are right, then why not pursue a marriage, in my opinion.
I am surprised she asked about annulments… but I guess she is opening her mind to all possibilities and future events.
All th best to her and to you in being her friend! God Bless.