I also tend to think that the dynamics of their (H and OW) R is changing...perhaps she is calling and he doesn't like it...perhaps she is calling and beginning to pursue because she senses his pulling away from her...she might sense him thinking and doing some soul searching and this could be making her feel insecure...
This is pretty much how A's eventually end...now is the time for you to really shine!!!...You shouldn't keep analyzing everything about her and him though...just accept that now is a time for you to fix you and him to fix him...and there are processes that will be gone through along the way that you and him may not like so much....so be it...
So put on a happy face...get caught up with work...take care of you and don't worry about H...don't worry about OW...you have the answer you wanted to hear "He is willing to work on things with you."...Just remember, baby steps...and make sure that you two have a courting/dating period again...don't just drag him home like a cave-woman...or the whole pattern of disfunction will continue...
