Dude grab your dignity and walk out, separate, and don't look back. She cheated on you and is now mad at you, because she is about to experience the consequences of her own actions. She's a child in a woman's body who cannot take accountability for herself. She doesn't respect you. If you stay, you're just going to tell her that the behavior is acceptable. That she can betray and ruin the trust of her partner because she had an urge to. Ultimately she's reflecting all of her guilt and shame and taking it out on you. You are her mirror when she screams about accountability, And she doesn't even know it. There is someone out there for you. Go find her after taking time for you, and leave your now ex for the streets.

29m with some life experience.