Aww, I feel for you, I really do, there's nothing annoying like having a third person in your relationship but was he not there from day one, like before you got married? Why was this issue not addressed and dealt with years ago when you both were just dating and not committed as such?
I can't figure out what the deal with her and the ex-brotherly dude is, it does sound rather suspicious though. Something I can tell you though is that she is being completely insenstive and just plain rude, her behaviour is extremely disrespectful. You need to be more firm and insistent mister, don't give her the opportunity to dismiss your feelings on the matter, she should be reassuring you not making you seem unreasonable. You are her hubby, she chose to spend the rest of her life with you therefore you should be the number one man in her life, since you are not there is something fundamentally wrong in your relationship. Good luck dude, hope it goes well, do keep us posted.
[SIGPIC][/SIGPIC]
Love is like a merry-go-round: you get all dizzy, and then you feel sick!