<human>: Provide a brief overview of the text.

Alright so my GF of one year just broke up with me 2 weeks ago and has been really rude and basically treated me like dirt even though I've been very nice to her since I initially wanted her back (orig. post here:  )

Anyhow fast forward a few days and she was nice to me for a while and suddenly just ignored me totally, today (we have a class together) she gave me some notes I lent her said thanks and that was it. Since then she's straight up ignored me and she's a pretty prude person but just posted some very suggestive photos to a social media site... (Lip biting, boobs hanging out more or less, butt stuck backwards). Is she over me and just trying to get rebounds or is she trying to make me mad? If so, then why so? What to make of this and how to cope?
<bot>: Ex of 3 weeks is posting slutty pics even though we were "working on it" but started ignoring me again. What to make of this?