Alright so lemme get some context here.

My girlfriend, soon to be ex, is a bitch and causes trouble for no good reason. I have an ex who still likes me but I don't feel the same way anymore.

Girlfriend will be named Nash.

So basically Nash always makes a big deal out of something that won't happen and we always argue about it. We had a huge fight on February 25th and she is all like "We are done" so I say "Alright" and ignore her for a week or two. I start talking to my ex about the problem and then Nash texts me saying "How could you..." the  goes into a whole rant how I cheated on her... even though she said we were done. And when I tried to finalize our break up she is all like "but I love you don't do this..."

Am I really the asshole here? Just need some confirmation to back me up.