From what I have read it seems that you are thinking about doing the same thing to your H as he has done to you. Do you think that you still want to save your M? If saving your marriage is what you want then you will need to consider the repercussions of your actions. Make sure that you are not seeking some OM because of the things your H has done to you. The feeling of giddiness does end. Everyone that has been in a R will tell you that they wish they could go back to when the "feelings" of love were so strong. You need to know where your commitment is. If you intend to pursue this OM you need to tell your H. If this is something that you cannot do, it means that you still do hold out hope for your M. Take the upper road, and only pursue if you know that your M is over for good.
God Bless
---ss