I am so sorry that your husband cheated on you. I cannot imagine that part of it. All the rest...yes, except for one thing. My husband's friends all complain that they don't get enough and their wives don't do the stuff they want and just really want them to be a little dirtier and less inhibited in bed. He said that one of them actually said, gee, if my wife would just say something really dirty to me, she would not even have to do it, that would be enough...
My husband is mid 40's, but has always needed way more than I did. I would say at this point, he is happy with every other day, and that is about where we are with it.
There was a time when I did not really get him at all. We talked about it all the time, the same argument, the same stuff, and I hear women on this site saying the same things, "I am tired, and I don't understand why he does not get that." I said it too, to him even. Men are just different than we are. They give and recieve love through sex. They are also really simple creatures. If you are not having sex with them, make them a sandwich...not quite, but darn close. He kept saying that I was not loving enough, and I did not understand that, because I could not love this man any more if I tried, he is terrific, but he would get all sulky if he went more than a few days without sex.
Then he was deployed to Iraq. He seemed really moody before he left (some of that is normal, it is easier to say good bye to your family if you are fighting with them, so many deployed soldiers pick a fight before they leave) but he told me that he had to go off to war for me to pay any attention to him, and sometimes, he thought that he would rather die there than to come back and be last on my list again, after the kids, after the laundry, after the house work. Eye opener. While he was over there, he asked me to read "The Proper Care and Feeding of Husbands" I don't like Dr. Laura, but she was dead on about Men, and I did what she said and I have never, never looked back. I started writing him some really explicit letters, pornagraphic, really, and when he came home, we hit the ground running, and have never had more fun together in our lives. I look forward to it as much as he does, and he no longer worries about when he will get sex again, he does not keep track anymore, and he follows me around like a little puppy dog to help me.
The more sex you have, the more sex you want to have. It is at least every other day, even when I am on my period (he gets something sexual then too.) Honestly, it really only takes a few minutes a day, and frankly, if you wisper something really dirty while it is going on, it will take even less time, if you are really tired ;) Sorry if that is TMI.
Because he actually acted out, your situation is different, and you will need to heal. You probably also want to have him all checked out medically, to be safe for yourself. You might even consider some counseling together so that you can trust him again. He may not be telling you the absolute truth about why he cheated. My husband looked at a web site where women were looking for men just to see for himself that there were actually women out there who wanted sex the way he wanted sex. He just found that it made him more angry with me because he wanted me to want sex with him, and that is want most men want, to have sex with thier wives. I bet that if he knows you not just understand him, but accept that it is OK and natural for him to be how he is, and maybe if he sees you reading the book, he will be willing to cut you some slack while you get over the pain of the afair.
I hope that you can work it out and be happy together.
M.