Dear darling,
Play your little games. I'll play mine. Poor little you, you're going to get your heart crushed. Do I feel bad? No, not at all. I want you all to myself. I have to get rid of her though. She survived my first attack, but now I need to get rid of her for good. I can't let you get away from me. You're going to be mine, no matter what.
I love you, darling. I long for our conversations. I long for your pain. I adore everything about you, but I need to get rid of your precious girlfriend first. That's my first plan.
Then... Only then can I have you, my darling.