F4W
If your W selected D, then she is the only one who can de-select D. Quit chasing her and don’t even think about sex. At this point, it is completely out of your control. The best thing you can do is show that you respect her decision and that you want to honor the M by keeping things civil. If you keep chasing her, she will start treating you like a scolded puppy dog and loose all respect and desire.
Since you still obviously love her, the only thing you can do is subtly remind her why she M you in the first place. Specifically, take care in your appearance, dress nicely, stand proud, and don’t let her see you sulk. To make things easier on yourself, vary your routine and much as possible and try to avoid things that you would do together. Finally, I suggest that you start devoting free time to exercise and body sculpting. All these things will help your self confidence. Plus, it is possible that your W might notice too.
Quote: Made the comment last night as I was BBQing, that her perfume smelled wonderful and left it at that.
Cut that out! To her, that translates to “she has you wrapped around her finger”. Here is a phrase I would suggest that you keep in your head from now on, “WWJDD – What would James Dean do?” Seriously, she needs to look at you and see, the cool collected guy that she can’t have any more. Plus, if she comes to you for a little attention, I suggest that you don’t give it up so freely. People want what they cannot have.
Good luck and I hope things improve for you
By all means marry; if you get a good wife, you'll be happy. If you get a bad one, you'll become a philosopher. -- Socrates