Lily is a Princess who has her curiosities, she was in the great guidance of a beautiful maiden, you. You took care of her, loved her and taught the things you know. You've spoiled her to bits until she met a Duchess. A Duchess who has the appeal to steal any woman.
When Lily developed feelings for you, she didn't wait and told you. She wanted to love you even more but you never reciprocated in which she yearned for the Duchess.
The Duchess easily gave her what she wanted. To feel loved, you on the other hand had to see her first time be with someone else. Your heart ached, the only reason you couldn't give what she wanted was because you were afraid with physical touch. You were afraid it'll ruin her status as a Princess.
Lily and the Duchess flirts around infront of you. It was torturous. Lily goes to the Duchess all the time to make love and feel loved. She never hesitated to come along to the woman's manor. She stayed there for a week and went back to the Palace for you. You confessed, cried and finally had your chance with her. But she never reciprocated your feelings knowing she had the Duchess now.
"She...she has my heart. I cannot keep her out my mind." She struggles to say to you as she looks at you with pure hurt and guilt.