I am open to an affair with my coworkers wife and I think she is too.
That's not good. Why do you think that is the case?
I have so many reasons.
Don't be a homewrecker, man. Plus, you work with the guy, so imagine him finding out while you're at work together.
My mind is at ease, I am not doing anything wrong.
Even if you are not the one in a committed relationship, having an affair with somebody who is married is still wrong. You are interfering in a marriage and you could get in trouble.