Just told parents about my girlfriend and me not being Christian

I’ve been dating this girl since June 15th, but we became official yesterday. Last week on the 19th I told my dad that I’m no longer Christian (raised in a Christian household with pastor dad). He said he’d support me and try to rekindle my faith which I don’t really care about tbh. Anyways today I thought the only thing in the way of a healthy relationship with my parents is that I’ve been seeing this girl and haven’t told them. We kissed for the first time back on Friday the 25th and I made things official with her after months of waiting and procrastinating because of my relationship with my parents (she’s left wing and alt and atheist, so my parents wouldn’t approve). Anyways, told my dad today and I just need help figuring things out. I don’t want this to be a huge wall of text so just ask questions but I need some help