My mother passed away a few years ago after a valiant fight with cancer. My parents had been married for over 30 years. My father started dating a woman last year who is a former Catholic and now considered herself a "born-again Christian." They recently became engaged. I asked my father if he was going to have a Catholic wedding, and he said, "Probably not." Ever since he started dating her, he goes to her church with her every Sunday instead of his church. This bothers me, because my dad was an active parishioner in the Catholic church before she came along. While I'm sure there were a few things he disagreed with about our faith, I never heard him complain once (read: he was perfectly happy being a Catholic and going to Mass each week.) While I am glad that church is still in his life, I am upset that he seems to have abandoned Catholicism. And yes, it bothers me equally that he seems to have given up on our religion because of a woman.
Is there anything I can do to help change his mind? I will be the first to admit that as a cradle Catholic (who didn't start regularly going to Mass as an adult until the past 5 years), there is still a LOT I still need to/am learning about my faith, so I'm not the best Catholic Apologetic there is. I can already hear my dad's response to me telling him I'm upset that he may not get married in the Catholic church..."What does it matter? I'll still be getting married in a church, before God..." What are some reasons I can give him as to why he should get married in the Catholic church? I should add that my dad is a baptized and confirmed Catholic and he and my mom were also married in the Catholic church- this is something that's been with him since he was born. I asked him a few months ago, point-blank, "Do you still consider yourself Catholic?" and he told me yes, but he ALWAYS goes to his fiancee's church.
Thanks in advance for any advice you can provide.