Her assumption that Astoria Greengrass filled that need for Draco was innocently made. How was she supposed to know what a sore subject that would turn out to be for him? It became all too clear that despite days of tumbling in and out of bed with the man, she knew very little about him. While she lived her life with Augustus and then with Antonin, he had his own life. She didn't know what he had experienced or done. Their pasts were complicated. Everything in their world was complicated. Likely they could spend the rest of their lives around each other and still know nothing about the other.