AITAH for following girls on instagram during a break up with my gf

To cut a somewhat EDIT*long story short, I've been in a serious relationship with this girl (now my ex) for about a year. We've been dating something like 8 months prior to that. Since the first week we started going out, she's been very controlling about my social media, and stated that I should not be following girls on social media since I'm with her now. We fought about this multiple times but we always went back on dating. This kept on and on.

One day we got serious (a year ago) and I stopped every social media interaction, but still we fought sometimes, and then she went looking into my ig profile and found some girl she didn't knew and asked me why I followed her. I responded that she's a friend from highschool, been following each other years before I even met my gf.
Situations like that have been multiple and by the end of it, I was getting really tired. She wanted me to delete every person that "I had something with", or that were "pretty enough that I might like them". And I did. I fucking did.

One day she said that she wanted to go out with her girl friends to a club, and I got upset. I said you woulnd't let me even have friends on social media, and now you want to go out clubbing? I stated at the beggining that I didn't want a girl that goes out so much. All this controlling she did to me before, somehow got into me and now I was being controlling as well. Never had this issue before with my other ex. I even took her to the club when she wanted to go out with her friends.

So we break up. And after 3 or 4 days, I started following some old friends and girls I didnt' knew on instagram. Also, I went to a birthday party of one of my friends. She talked to me over the phone and I did tell her about this party. I wanted to go back to her, but we need to stablish some limits that were good for me and her. She said if I have any "proof" that I was actually in a party and not with some other girl. I said I was never going to give "proof" ever again in my life, about anything; more so if we were broken up.

Then I got messages from her saying that I am an AH because I'm doing this. She's still watching my followers/following count on my social media. Turns out, I followed a girl friend of hers (that I never even knew, had no idea they were friends whatsoever, don't know ANY of her friends). And now both of them think I'm the absolute shittiest person on earth.

I explained that I can move on as fast as I want, and also that it's not like I cheated or anything. Didn't do anything except following some new girls.
Now she doesn't talk to me anymore, and I sincerely don't know if I want her back, even though I love her (and so does my family) and she's been great apart from all that paranoia.

TL/DR: my gf got mad at me because I added girls on social media while we were broken up, and demanded proof that I was not with some girls during this period.

EDIT: clarification.