Sorry for the wall of text, I’m posting on mobile

 Back in my first year of high school I talked to this girl for awhile and we ended up in a relationship. We dated for like 2 months and then one day she broke up with me out of the blue. 

 A few days later she posted a picture of herself cuddling with this other guy that I went to school with. I was pretty upset that she moved on so quickly. A few weeks later my friend told me that my ex had been talking to this guy before she broke up with me and basically planned on leaving me for him. I know this isn’t necessarily considered cheating but I would say it’s at least emotional cheating. 

 Anyways, a few months later he dumped my ex and she took it pretty hard. Me being a dumb 14 year old, I decided to talk to her about  it and she confirmed that he ended things with her. I then told her “now you know how it feels” and she got very upset by that and told me I was a terrible person for saying that. She was super pissed at me for awhile after that interaction occurred. 

Was in the right to say that to her?