First of all, if you give a damn about your husband or your marriage then BURN that other guy's email addy. Forget all about him. Don't even THINK about him. You are suffering from a serious case of "the grass is greener" syndrome.
ALL relationships get stale and tired if you don't work on them. Haven't you ever heard of "The 7 Year Itch". Well, you are experiencing that.
It's like complaining that the 5 year old car you own isn't shiny and new looking anymore. Well, if you work at it, you can have a new and shiny 5 year old car! The same applies to your marriage.
You have to make an effort to keep your marriage fresh and exciting and it's not just on his end. It sounds like you are content to sit back and wait for him to treat you like a queen and hope he comes around. Well, it doesn't quite work like that. Marriage is a two way partnership and you don't just bail when things start getting a bit tarnished. Your marriage isn't always going to be fresh and exciting and yes, you have to work to keep it that way!
It sounds like your husband has committed no greater sin than not being exciting and isn't putting you on a pedestal constantly. Do you love him and WANT to hold it together?
If you do then why don't YOU think of some stuff you can do together and talk with him about stuff that you both enjoy? Maybe it's going to museums or out to see a concert or hiking or ANYTHING! Doesn't sound like you have kids so the possibilities are endless! Cook him a nice dinner, light some candles, watch the news or read a good book and be prepared to discuss it with him. Start thinking of what you'd like to do with your husband instead of some guy you met out of town.
Above all, don't give him grief about being on the computer or watching TV but give him a reason NOT to do these things. Maybe get dressed in some nice lingerie and greet him at the door with bottle of wine some night when he gets home from work?
And yes, ask your husband if you could both take a day off and spend it together, even if it's only one day on a weekend. Tell him you are lonely for him and want to have dates. Make him feel wanted! I'm getting the idea that you are looking for an excuse to have an affair, which is unfair to your husband and your marriage.
Instead of pining for some guy you met for a few days out of town work on what you have..and next time yo go out of town, wear your damn wedding ring!
I mean seriously, you have a good guy but some of the excitement is gone so you are thinking about having an affair? That's pretty damn sad.