I don’t think i’ve ever asked my wife if she was seeing someone else.
If it turned out that she were, i guess the fact that i hadn’t asked would absolve her of accusations of lying or dishonesty, in your book?
This **David **however, does not.
I’m single and cute, ladies!
That does not absolve him from making it. Being honest would have been the right thing to do. His decision to be deceptive has caused both Nancy and TheMerchandise pain. It’s not surprising that the OP is having emotional problems with the relationship.
Not only is it not fair, it’s a dick move. He’s lucky she forgave him for it, and I think he ought to suck it up when (I hope) she addresses her feelings with him. It’s not “solely her problem” IMO, as she’s been told by other posters in this thread. Talking to him will probably help her more than blaming herself.
You can usually identify the right choice because it’s the hard choice. Paradoxically enough, for an ethical person, that also makes it the easy choice.
Cite, please.
Welcome to the Dope! As Picunurse pointed out, stop reading the blog and hang around here instead. If nothing else, the Dope is a great substitute for just about any obsession – if only in that it becomes a better obsession. 
You say that she’s very different from you. It baffles you how he could be in love with two such very different people. In my own opinion, I don’t think you read her blog because you subconsciously think she has something you want. Rather, I think that perhaps you subconsciously believe she has something you lack: The thing that attracted him to her. The thing that may have even prevented him from going out with you if the relationship was in a better place – both emotionally and geographically. It’s a subtle but important difference; the former is about trying to wrest whatever last measure of attention you perceive that she has of his, while the latter is about feeling that you’re missing some important element necessary make the separation of your boyfriend from his ex-girlfriend complete.
If this is the case, it’s something you need to put a stop to. Continuing to read her blog just feeds this vague sense of self-doubt and it will eventually become toxic if you let it – both to the relationship and to you. Forget about her, her blog, her very existence. While she might have once been some torrid part of his past that involves you peripherally, she is a non-event, now, and has been for a long time. There is no issue here except what you make. You have to face the reality that this is something you’ve woven from whole cloth made from your own specters. Take whatever energy you’re using to read her blog and put it into something to strengthen your relationship. Otherwise you’re just poisoning your own well.
Delete the link to her blog. If it helps, install a plugin or program to block the URL so you can’t even type it in manually. Get rid of anything and everything you have that has anything at all to do with her. Go out with your boyfriend, have a nice dinner, a movie, take a trip, whatever you need to do to put it out of your head.
And don’t think you’re missing something. You’re not. It is entirely possible for someone to fall in love with people who are very different from each other. Anyone can. It just depends on what sort of qualities fall upon their particular interest – and it is important to remember that many qualities are mutually exclusive, so even if you managed to pin down what it is he liked about her and tried to become more like that, chances are that it would diminish the qualities that he loves about you now. And that’s really the point here: Obviously he loves you for who you are and the qualities you possess. Don’t mess with that. It’s a good thing.