What will the day bring?

Hoping for a good day as I prey for everyday. I find myself so needy for affection from my husband. He don't mind and it seems genuine but heck what do I know. I guess that's what scares me. To go from thinking you know someone inside and out to questioning everything they say or action they make. At the time being (if we could erase the A)our relationship is as if we just recently met. Cuddling, kissing and showing affection all the time. We have been together sexually so often lately that it seems like its new. This can be so confusing. First, one part of me can't comprehend why I would want to do this with him. Second, why is everything like its new. I can understand my feelings some. I think when the reality of loosing him came to life i wanted to do everything I could to stop that. I did take him for granted before and I don't want to do that anymore. I know it wasn't my fault he ran to another woman because I didn't show him enough affection but at the same time if our relationship can be better because I have learned to give more then I have tried my hardest. So now I wonder how he feels. Is the sex genuine or is he just trying to keep up at the rate him and the OW where going at. Is it more exciting for him because of the affair? I also am scared that if I don't have sex with him that little voice in his head will tell him the OW would never refuse and would give like new lovers would. So confused. All I can do is do this one day at a time...or is it minute by minute.  I don't mean to offend any one by talking about my bedroom activity but it's on my mind. I guess the sex part of this can be a challenge also.
I know I need to not ask any more questions. But that is so hard. I guess no answer I get from any question is going to completely guarantee he will stay with me. I am just really hurt from finding out yesterday that he did have feelings for her. Now it eats at me that he misses her...Will he give in and go back? That would be devastating to say the least. For me to be crazy enough to try and work it out and to have him choose her in the end. Only time will tell and dealing with these feelings in the mean while is so challenging! I will just set my happiness in that for now he is with me...
Thanks for listening it means a lot!
Dawn