Well, that sounds like you do plenty. At some point you have to put it on them, that THEY are the bore! Perhaps as robx suggests, she needs to see what she will lose. I know how you feel, trust me I do, you want to save your M, but in order to get yourself in the right frame of mind, try to step back and see your W as a potential mate. Is she appealing? Sounds like SHE'S the one in the rut.
Maybe you just need to be around less, and start to build your own life up, and see if she gets curious and wants to be included.
Well ya think?!
Lets see, she has every need taken care of. Something that is so easy and so simple is not very exciting, think about it.
People want what they DON'T have. That's human nature, a basic rule that you will never be able to change.
Rob you give her everything and guess what, she's bored. People around her say that they wish they had her life, why? Because they don't have it.
Do you get it?
Try the trick I proposed, and don't expect results from day 1. You will have to do it for a while, plan on 1-2 nights a week for a few weeks, you'll set up a bit of a pattern where you are going out without her and coming home late. You can even include throwing clothes in the wash when you get home after a "late night" along with taking a shower because you don't want her to smell the other woman on you you want to make sure she doesn't get any "evidence" from your clothing.
She has you right now and she doesn't want you.
Start going out with someone else, and you're no longer hers, watch what happens, seriously if I could, I'd probably bet a million dollar lottery ticket on this.
She will become possessive, attempt to reclaim her territory and mark/"tag" it by having sex with you (or attempting to, remember hold off, don't give it, if you're easy, it won't work).