Chastity and orgasm denial discussion

I want to share my interest in chastity with my Girlfriend and I need some encouragement. Any advice or stories from your own experiences would be wonderful! I’ve included more details below for those who care! Details: For the past couple of months, I have been eager to tell my Girlfriend about my fascination with chastity. She has only experienced a bit of kinkiness so far (mostly using handcuffs and rope), which she seemed to enjoy slightly. She knows I have other kinky interests and is fine with that; she just wishes I would be more open about them, though she understands I need time to fully come out. We are deeply in love and discussing marriage. Despite knowing I probably shouldn’t worry so much, I still feel scared to bring it up. Although she has no direct experience with these things, she is a naturally dominant person by nature. I have also been searching for books or websites that could serve as a gentle introduction for her. My focus is on combining chastity with an FLR (Female Led Relationship), but I am unsure whether to mention the relationship dynamic first or just the device itself. Additionally, she knows I lean towards being more feminine and likes this trait in me; she says it makes me sweet and sensitive, although I suspect cross-dressing might not be her thing.