On-line live-chat or wife?

So I am new to the site! and here's the issue I am curently having...........I am married and have been since may of 2014! We have been together for 2 years and have known each other for 20+ years! In the last 8 months I have noticed that he has been off in his own world......he rarely pays much attention to me unless it is benifiting him.....we went from having intimacy in our relationship to it's gone...the closest we get is laying in the same bed in the evening. He says that he loves me and will always love me but that sex is not really important to him unlike honesty, trust, and being faithful. So in the begining I just let it go.....didn't want to bother with asking the ?'s and make him upset. But it is now to the point that I rarely get a kiss in the am b4 he goes to work and we have not had sex in 8 months......or rather its sex for him cause he gets his gets off and then goes on about his day! While i lay their feeling like i was just used and glad to be able to make your day better.......here's the catch though every time I try to speak to him about it......he blows up in my face and gets defensive and says prove to me that i am doing something wrong. And until you can I don't want to hear about.....and then just lately I hve noticed all these weird emails, etc coming in and they are always addressed to him and like encrypted so I can't read them. And he is always up late responding but never chooses to show me what he is doing and makes it a point to wait till Im sleeping to respond back. And then I found a live chat link on his tablet that just happened to pop up when he was at work and i confronted him about it but he said yoy know how emails work they send you spam all thetime and I'm sure that is what it was.......me "mmmm ok"........so heres my ? do i stay and work on this with him or just walk away like he has already?

Going by your post, you have already accepted that he has walked away from your recent marriage. Yes, you may choose to stay and try and work it out but you're on your own now and you need to realise that to work it out, he has to be on your page for you guys to be successful at this. Regardless of what the emails entail or from who and where they are coming from, the very fact that he hides them from you is the biggest concern. If he states that honesty, trust and being faithful are important to him, then you should ask him to have a good, hard look in the mirror because it's obvious that his actions are completely different from his hollow words. As for you proving that he is doing something wrong, his actions, again, are talking. If you can't sit him down and get him to admit that his actions are the opposite to what is required for a successful union, then, I'm sorry, but you are basically wasting your time trying to sort it out.