How wonderful! Congratulations to you both! Isn't it such a pleasant surprise when you expect a conversation to be so awkward and difficult, but instead you find yourselves working together and on the same page?
No matter where your boundaries eventually land, I think its great that you are going through this together. Love and intimacy is such a big part of life, but so few people get to explore and redefine their desires as a couple. Being at the same stage, supporting each other and learning together - what a beautiful opportunity.