<human>: I don't know what it is, but I just feel dead around her. We've been together for quite sometime, and I am just left feeling neglected and alone. We don't seem to have anything in common anymore. The only times she talks to me is to remind me of shit I need to do. When we try and spend time together, she is constantly distracted by something else, beit the computer, or whatever. That, and recently I have found it increasingly difficult to see any quality in her that I love. I feel guilty about how I feel because she has put up with alot of my bullshit in the past. 

I also feel guilty because I am crushing hard on her best friend, who just so happens to be my best friend's GF and mother of their child.

I don't know how or why, but I can't help the way I feel. She makes me feel valuable and important, and we share the same interests and passions. We also share the same dreams and plans for our respective futures. She shows interest in me and my life in a way my wife hasn't done in years. I'm sure she is just being nice, but I think I have built it up to be something it isn't due to how shitty I've been feeling. Maybe I am assigning too much value to small niceties. The small niceties definitely make me feel awesome though. Problem is that I doubt that my wife doing/acting similar in respects to paying attention to me will be welcomed in the same way.

I am destroyed, because not only does my wife make me feel like shit on a regular basis, but I make myself feel like shit because of how I feel about her friend. I know her and I probably won't ever be together in the capacity I presently desire, and it kills me. It isn't fair to my wife, or either of our friends for me to feel this way. Everyone deserves better.

I just don't really know what to do or how to cope. I almost think completely removing myself from the situation is the only way to go. I need to check back in with reality. 

Any helpful advice out there?

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: I [26M] am miserable with wife [25F] of 6 years, crushing hard on one of our mutual friends. Don't know how to cope and move forward.