I had suspicions my girlfriend had been cheating on me

I recently found a cellphone blocker on her android apps and had s girl who is very popular at a local university ask around to see if she knew anything about my gf.

Turns out she slept with a guy and she sent me screenshots of the situation.

She somehow seen the conversation between me and this other girl on my twitter, but not the screenshots and demanded to know who told her this, who the guy was ex, I refused saying she already knew.

She ghosts for two days.

Tonight she came here telling me she loved me and needed to talk to me in her dark, when I got in she immediately pulled out of my drive, driving 100, very erratic telling me that I needed to tell her where this girl lived, who the guy I spoke to was or she was going to kill us both she was sweating profusely, eyes were dilated, bugged out, face swollen, hair a mess, clothes a mess, several times she almost ran into a pole, she started ripping her clothes off, screaming like how I never seemed someone scream, driving over 100, I just kept telling her I believed her, trusted her, yada yada to get the fuck out and finally she dropped me off at home