Ex-partner Threatening To Sue Me For Looking Through Her Messages And Discovering She Has Been Cheating.

So, I need some advice on this. I've never experienced anything quite like this. Sorry this is long, but wanted to give some full context. I discovered that my partner of over two years had been cheating on me throughout the whole relationship with her ex and then more recently another guy and burtally gaslighting me the whole time. I discovered that she was planning a secret trip with this guy and caught her initially with this because she said she was talking to her female friend, but her bluetooth headphones didn't connect and I overheard some of the conversation. When confronted, she freaked out, denied it, then refused to talk about it and said I had to leave the apartment (we're both on the lease) threatneing if I don't to call the cops and tell them I am being violent and she is scared of me (never even so much as raised my voice to her). She also called her father claiming the same thing and started screaming so the neighbors would think she was being abused. I finally decided not to push this and left and stayed over my friends. The next day she left town, I came back and all evidence of me having lived there was hidden.

I really wanted closure on everything as throughout the relationship she has made me feel like I was being unfair and paranoid for even suspecting something might be wrong in the relationship and wanting to talk about it. I decided to open up her laptop as I knew the password because she has given me consent to use it in the past regularly to watch something or look something up on it. In her messages I saw that she had infact been cheating on me with this guy, and that he actually flew out, met her at our apartment, and they left on a trip together. On top of that, there was messages from another guy (her ex) that come to find out she never stopped seeing when we got together and had been seeing this whole time going on secret trips with him (disguised as work trips).

It gets darker tham this. Turns out that each guy didn't know about the existence of me or the other guy and she was lying to both of them claiming she had been living alone for a while. I read more and realized she was fabricating her life completely to them lying every other sentence. My possession, interests, hobbies, she was claiming were hers. Things we did together, she did alone. Stuff that happened to just me, happened to her. Things I remember her doing over a year ago, she would refrence as if she did them a day ago. My rabbit I adopted was hers. I saw in the messages the newer guy refrenced that time I caught her on the phone and he questions her about "was that your ex or something you were whispering to?" She denies it. He confides he has trauma related to being lied to in past relationships and she says he can always expect honesty and transparency from her as it is of most importance to her. He was still a little uncertain, so she tells him there was something she was going to talk to him about, but thought it would be more appropriate in person when he gets here. She told him her crazy ex (talking about me) from years ago recently came out of the woodworks because she left her instagram logged into his computer and I saw that the two of them were talking and since it was the only guy she has talked to in years, that I got jealous and angry and have been stalking her and that it has been traumatizing for her. This was her way of shifting the attention to herself and getting him to feel guilty for even questioning anything. This all is just the tip, it is crazy how much lies, manipulation, and deception she has been engaged in with everyone. It was incredibly disturbing and sociopathic behavior.

Both these other guys seemed like genuinely good dudes that are just totally unaware of what is going on. So I screenshot a bunch of evidence of everything, and sent it to the other guys so they could avoid being continued to be led on and hopefully experience less hurt down the line. She has led me for so long to believe we were in a committed monogamous relationship and that we had a future together for so long, that over the summer she had be cosign on a car with her as her credit wasn't good enough on her own. So now she has a car my name is attached to on top of everything. When she found out what I did, she called me up, saying I violated her privacy which is a criminal offense, and there her and her family are going to take me to court to sue me. She might be bluffing, but she is so unhidge that I don't know if she will actually take it there. She also threaten to come back while I was at work, take my rabbit and other possessions from me and I would never see them again. I hurried up and moved all my stuff out of the apartment into storage, and have been staying at a friends and told her I don't ever want to talk or hear from her again.

Last thing: I also got tested afterwards and she had exposed me to STI's. I had been having some symptoms, but I had testicular cancer and was worried that was coming back and was going to get checked for that. I got tested the beginning of the relationship and was completely clear, and she claimed she did the same and was clear. I feel completely violated in this. I know there is some legal stuff here with exposing me to STI's, but not only that, I consented to having sex with her under the premise that we were in a committed monogamous relationship and that she wasn't sleeping with anyone else. She violated what I consented to by lying to me the whole relationship and sleeping with other guys behind my back and exposing me to STI's.

I am in Portland, Oregon.

Thanks!