Hi Sheridan, well done on looking for help.
Read the other stories here. In the My Journal Forum you will see many stories similar to your own, you will also see the success stories, what are they doing that you can apply to your own situation?
Your wife is going to find out of course, better that you tell her. What will happen then? Who knows but rather than just presenting the problem again you can show her what you are going to do about it. Show her this siote, get to GA meetings, get yourself banned from where ever it is that you gamble.
She may stay, she may leave. Whatever happens though you are still going to have a gambling addiction.
Keep posting and let us know what positive steps you are going to take to address that addiction.
I would however start a thread in the My Journal Forum, it’s a busier forum and you will get more feedback and support there.