@ataloss03,
Hi, while I somewhat agree with Jespah - I've known other people with difficulty in marriages that find it hard to walk away.
Walking away isn't the easiest thing in the world (for many, many reasons), and nor should it be a black & white in all cases.
Your husband is currently in a state of disrespect towards you, and towards your marriage. He is
openly moping over another woman. Openly doing so is going to hurt your feelings, and he knows it...but doesn't care.
If you accept that behaviour, you are saying to him, and to yourself - I deserve this disrespect, I deserve this treatment. Once he knows he can openly disrespect you, things start to become much more complicated and hurtful.
You are not there to support him in your marriage while he sulks over the loss of an affair with another woman. This is not something anyone in any marriage should ever do. It is not normal, not expected, and should never ever be asked of.
You have the right to stand up for yourself, including demanding that he get counselling - his actions are having a direct result on you, and he is not able to resolve them by himself.
Inherent in a marriage is a 'contract' that you will both look after and care fir each others happiness.
If one side refuses to care for and look after the others sides happiness (which is what your husband is essentially refusing to do), then the only person left to look after your happiness in the marriage is yourself. You then need to ask yourself what makes you happy in your marriage, and if you are getting that (this includes respect, which is essential to a healthy relationship).
If you are not getting that, you need to ask yourself if you can see it changing.
Also, there's an old saying 'if you do what you've always done, you'll get what you've always got'. That is to point out that, if you do want to change things - and one way fails, you'll should try a different way the next time.
Also note that you can't control another person, and you should never take responsibility for their actions (acknowledge your contribution to a decision they made, but understand they are always responsible for their actions)
In other words, start taking control of your life, knowing what is essential to your happiness and looking after and respecting that (and understanding the same for him)...and build your relationship on that.