Why is she suddenly taking ages to reply?

Anonymous
I've been seeing her for about a month now. Ever since I last saw her she's been taking much longer to reply to texts and when she does she doesn't seem quite as interested as she used to. I would just say this is her losing interest but if we haven't texted in a while she will always initiate some sort of conversation. She has also invited me to have dinner with her sister and sisters boyfriend this weekend which confused me a bit
Why is she suddenly taking ages to reply?
3 Opinion