Need legal advice urgently

Location: New Jersey

Hello all. Need some legal advice urgently. I’m quite anxious about what to do.

I caught my gf cheating on me a second time with the same man in a different city a months after I caught her the first time. I had her laptop password because I used it whenever we were at her place the last 6 months and wanted to watch Netflix and I went through her iMessage chats and caught the cheating taking place and all the lies. I went forward and broke up with her and told her mom of what was going on and sent her the screenshots of the chats she was having with the man she was cheating on me with.

I was quite broken and distraught and spoke to 2 friends I told about this scenario same day saw how distraught I was and they texted her one sentence about how disgusting and slutty this was without me knowing.

Now I’m getting threatened that this was harassment and cyber bullying. She also told her mom and family that she is getting death threats from random people and it’s like 10 people which is not true. I only told 3 of my best friends who didn’t tell anyone as I requested them not too. Out of those 3 only 2 sent her a text.

Shes threatening to sue me for defamation, cyber bullying and harassment as well as death threats etc. shes also telling me that she is going to go ahead and get the police involved and that she will be emailing my jobs HR about all of this and get me fired and stuff etc

I wanted to ask the community if in this case I am liable to be convicted? Have I committed any crimes and can I be successfully sued for anything that would ruin my life? Moreover will my job fire me or kick me out for something like this?

Any and all advice is appreciated thank you everyone!