<human>: Can you provide a brief overview of the text?

I know technically it's her past, but I'm somewhat heartbroken over this. We were together for 2 years and engaged. She acted like everything was new for her. She said she's never felt like this before and that she has never been engaged or in this serious of a relationship. She played along acting like we were sharing something special and that's what really attracted me to her. It felt like we were really connected and experiencing new things together. And that's what I wanted. I've caught her in a few weird lies before about her ex but this takes it to a weird new level. I don't know how to feel about this. I don't know why I'm so devastated over this. I feel lost and so anxious. It's a huge lie but it's before we met. What can I do to help myself through this and is this really worth ending a relationship?
<bot>: my ex was engaged and pregnant right before we met, she miscarried, but told me I was her first serious relationship.