That's very unfair of her to send mixed signals like that. Although there are so many things I would want to say to that like "hey, no mixed signals please, I'm having a hard enough time as it is" its probably best not to say anything. People often say stuff like that so flippantly "cheer up, I love you"...as a way to pass off the responsibility of hurting someone. Responding will only further the dialogue and drag it out.