Welcome to MarriageBuilders, Twista...
Your pain and fear are really apparent in your post. Sounds to me like you want very much to save your marriage.
Which is what MarriageBuilders is all about.
Unfortunately, you've posted in a forum that doesn't get much traffic...maybe difficult for a lot of us oldies to remember back to when we had only been married a year and two months...I don't know.
I know I didn't spend eight months of it away from my spouse. That's a special added hardship, which I think you convey really well in your post.
There are others here on MB who are in the military...even in Iraq, right now, who have been in your shoes...know where to walk and understand. You're not alone. You're not crazy.
Would you consider doing a few things to your post and moving it, so you can receive responses? I understand what a pain punctuation can be...yet, for old eyes to read, comprehend...goes a long way in communication to put in the periods, the paragraphs (paragraphing often helps our minds to understand in bites, store them with markers). Doesn't have to be perfect...you aren't ignored for putting a comma where a semi-colon should be...I don't think.
As a reader, I see a barrage of pain, lots of facts lost in your post. You're worth seeing...your marriage is worth helping. I hope you will revise your post, copy and paste it to the Infidelity: General Questions II forum...lots of traffic, where RIF and Mortarman post...and others...like Longhorn, can help.
The whole Phil thing is your wife crossing a marital boundary. Not healthy for the marriage...which has you, her and the marriage in it. No room for Phil or other single males...even as friends.
Dr. Harley calls it protecting our weaknesses...especially with you deployed. Please read all articles on this website, beginning with Basic Concepts (links to the right of your screen). When you know more, you can do better...and Dr. Harley writes in our language...very understandable, readable, and I hope for you, comforting.
You can do far more than sit back and watch...you are half of your marriage. That doesn't change. You can't change her, or her choices...understanding more about what you can choose to do and not do is your responsibility.
Thank you for being here, for being brave and posting.
I hope you will continue.
LA