Wife Wants to Fuck Coworker

Seems like she wants to fuck anyone who isn’t me. She said she’s willing to work on things and do couples/sex therapy but I just feel like such a complete idiot. When we dated, there were so many red flags I ignored because I thought that she would grow out of them. In nearly 8 years of marriage, she’s outgrown and changed nothing. She also blames me for her and our life choices. I would run away but I love her so much that I’m willing to anything for us to stay together.

Anyone else been in a similar situation?

What are some healthy coping strategies?