Close
Hmm let's think of this situation as a school days one and it makes a sense of reason. However, I cannot believe her audacity as she should just go face you to say she don't like but wow. Cyber terrorism.

Way too much elab on my part...

Here's the laydown.
Subject A( your gf's ex)
Subject B( your gf )
Subject C ( you)

A hates B but moreso wants to make C miserable to make B miserable. ( Most effective way ) In doing so, B is sad. A moves in and attempts to steal B from C. In case this fails C is shocked and mortified if not outright enraged at A tries best to comfort B while hating A( who by
now since heart is cold as ice ) loves the hate making them happy. Course of action?

Flee?
Fight Back?

Neither. If any purposely show up TOGETHER and display the B and Cs bond to remind A of their place( If they don't end up broken and/or hopeless for a while after that. )

srry may be bit hard to understand but it's worked for me... Just trying to help ; ) I put three of my best friends advice and it's what I got. Hope it helps! And sorry for late reply, was watchingfate/stay night as you can see by Ava. : )