I'm in a tough spot and need advice here. I (25m) started dating my fiance (20f) two years ago. I used to be a sex addict because of the home I grew up in and how I chose to cope. After being SA'd on a date I quickly sobered up and through a therapist I realized that I really don't need or desire anything sexual. Fast forward and I meet my fiance who was a very sheltered Christian girl who made me feel like I was able to be myself (no pressure or even talk about anything sexual). I fell in love hard and asked her to marry me, and we began premarital counseling from the pastor she wanted to marry us.
Suddenly I watched her take a few steps and then deep dive into sexual topics in regards to marriage and she's even tried to push my boundaries. I thought I'd be safe with a girl like her, especially since Christian women talk about how sex is something they could easily and gladly live without. Yet here I am feeling scared and stressed. I don't want to do anything toxic like lying to her by making excuses to not have sex, so please don't suggest that. I'm genuinely looking for help on how to avoid sex with her. I've tried telling her how I feel in our counseling and her and the pastor both say that I'm a man and that I'll want to have lots of sex eventually once we start doing things in the bedroom. Please help me