What if we are both married but have this attraction?

OK this is kinda complicated. I have been married to a great man for 11 years. Part of my issue is that 8 years ago my husband got hurt on the job and has not been able to return to work (the drs say he is unable to). So to say the least our lives the last 8 years have been a major roller coaster with more downs than ups. We relocated to another state last year. I honestly thought that a change in environment and us moving closer to his family would help him (stupid thought) because he seems to be on the downhill side of life (almost as though he has given up). Anyways, I have begun to resent my husband for the fact that us making every month is based on me and me alone and we have 1 of 4 kids living at home still. I honestly feel like I have the entire world on my shoulders and the balancing act is about to break me…not to mention that I love my husband but I am not in love with him anymore. This is where is gets even more complicated than I ever thought it would…through a common hobby, we have met a number of people online and in person. Well through this hobby I have become very close to one particular man. This man I have not actually met in person as of yet but we have been talking on the phone, via emails and such for about 6 months. We have both expressed the attraction we feel for each other and we both know of the each others spouses. He has been having martial problems for over a year and has tried to resolve them and my problems are compiling. We are making plans to meet soon for a weekend. I have told him that I fear that when we meet that things will go awry and not work like we feel it should, he has expressed the same concern, but with the same token, he has made references to my relocating closer to him (which I would in a heartbeat…he has been on the same job for over 20 years…whereas I just started a job where I live). Yet we both need and want to meet and will. We both realize what is at stake but the thought of possible happiness on both ends is something that is outweighing everything else. This would be much easier on us had our relocation been to the same state he lives in, which is a neighboring state to where I am. I’m so confused yet I know exactly what I want.