My [24/M] ex-girlfriend [24/F] was very insecure. She went through my entire phone; would at times bully me, my friends and sometimes even her own friends (she would laught at them behind their backs); she would ask me how 'my date' went, if I spend  any time with any females, would it be friends, profesionally etc.; we had huge verbal fallouts which she claimed was nothing compared to the fights she had had in earlier relationships and she would regularly guilt trip me.
I think that most of this stemmed from her low self esteem and insecurity. I have a few close female friends (strictly platonic) and the fact that her mother cheated on her father when she was a child didn't combine well. As you can see, she didn't trust me at all. 

She ended up breaking up with me, claiming that I had neglected her (in reality I pulled away from her because of her poor behaviour). We made it only two months before I became sick and tired of her behaviour. This was all about six months ago. 
Now she is with someone new, they are moving in together after only six months, seem happy on social media and I can't stop obsessing about it. 

Is it possible for her to change this poor behaviour in such short time? I feel horrible thinking that she is now happy when I didn't get the opportunity/chance to make a relationship with her work out. Also it makes me feel like something is wrong with me, as I couldn't make it work between her and I.

Thanks in advance.
user
Ex-GF was/is insecure and the poor behaviour due to her insecureness eroded our short relationship. Now she is with someone
assistant
My [24/M] ex-girlfriend [24/F] was very insecure. She went through my entire phone; would at times bully me, my friends and sometimes even her own friends (she would laught at them behind their backs); she would ask me how 'my date' went, if I spend  any time with any females, would it be friends, profesionally etc.; we had huge verbal fallouts which she claimed was nothing compared to the fights she had had in earlier relationships and she would regularly guilt trip me.
I think that most of this stemmed from her low self esteem and insecurity. I have a few close female friends (strictly platonic) and the fact that her mother cheated on her father when she was a child didn't combine well. As you can see, she didn't trust me at all. 

She ended up breaking up with me, claiming that I had neglected her (in reality I pulled away from her because of her poor behaviour). We made it only two months before I became sick and tired of her behaviour. This was all about six months ago. 
Now she is with someone new, they are moving in together after only six months, seem happy on social media and I can't stop obsessing about it. 

Is it possible for her to change this poor behaviour in such short time? I feel horrible thinking that she is now happy when I didn't get the opportunity/chance to make a relationship with her work out. Also it makes me feel like something is wrong with me, as I couldn't make it work between her and I.

Thanks in advance.
user
Ex-Gf was insecure, behaviour caused relationship to fail. Now she is with someone new and I feel like something is
assistant