But I second the point that W may need time to really unlove OM and relove you...
I am going through this with my H...we have been married for almost 27 years.....just before our 25th he moved out and announced he didn't love me....then I found out about OW....it was over 18 months before H even considered trying to work things out with me....this was because even though they broke things off a year prior he still had feelings for her that were so strong he couldn't/can't tell me that he loves me....he says be patient...he is working on his feelings....it is hard...but I feel that eventually his love will return and he will be able to express it to me freely....that is my goal
So if there are times that W pulls back...don't worry....she will need to work things out and it is best if she does...that way the commitment to you will be solid....