Kathleen......My heart is with you. Break-ups are emotional in so many ways. You don't mention the reason(s), but I believe I can offer a helpful answer, nonetheless.
I'm sure you came to the obvious realization that it was both unnecessary and bizarre for your parents to remain in an unhealthy marriage based on "religion"...or any other reason for that matter. The fact is, many people do.
That is "those people" and your parents. They apparently knew nothing BETTER. YOU, on the other hand, DO know better. I love Maya Angelieu's quote: "When we KNOW better....we DO better."
Your mind's picture of both marriage & Religion, based on history of experiences, are completely understandable. However, I can only hope you are able to separate this from YOU, your life and the PRESENT.
I am not in a relationship, but at 66....I have had a lifetime's worth of them, from nearly perfect to disastrous and everything in-between.
I'm fairly sure I don't need to say that the "nearly perfect" relationship was with "the right person." the ONLY person who owns my heart, always did, always will. (He's deceased)
How do/will you know when he's the right one? From the depths of my soul, Kathleen......WHEN YOU FEEL NO NEED WHATSOEVER TO ASK THAT QUESTION....because every fiber of your being screams to you..."He's the ONE." Stay strong. What will be, will be. The Universe makes no mistakes.