just a thery here but, Maybe the reason your husband seems so dull is that you are floating on the endorphines of your affair.
If you want fire in your marriage you can have it shortly but, it requires work.
As far a finding the man of your dreams, there aint one! Let me say this, 8 years from now this new lover that you are hot for if you and he stay together the only thing that will be different in that relationship is the face and the name.
Habitually, we choose the same personality type over and over, thus giving us the same result. Heres the deal, fix your marriage and your mindset. When you start looking for problems you will see more than are there. If I may throw God into this I will say this.
It's basic but it works. A triangle. God is the peak, you are the left and the hubby the right leg of the triangle. The closer you and you husband get to God the closer you get to each other as you move up the leg of the triangle together.
You must know that divorce is never worth it. If you really believe that divorce is the answer no one on here is going to change your mind but, If you are serious about living life to the fullest and experiencing a true happy ending in your marriage it lies in your head.
Happiness comes from within and not the person promising it to you in an affair.
Hope this is a counterbalance that helps!