Ok technique wise, that stuff is good, but it goes beyond that.
You have to seduce her. Unfortunately you are boring old David. Not to be mean, but you might as well be her brother. In the other men she sees sexy strangers, she sees your dirty socks everyday.
Don't compare yourself to these men, because that's a level 2 attraction, and you'll never have that ever again.
One of these men could buy her dinner, and take her dancing and she'd be swooning. You could do the same and her first reponse might be, "oh he wants to get laid again".
Of course we both know that in both cases both you and the other guy both want to get laid. Yet you love her, the other guy just wants a quick screw. Maddeningly enough she'd probably rather have the other guy.
I don't say all this to anger you, it's to drive the point home that using the same strategies other guys may use on your wife will only not work, but may backfire.
Instead you need to play on a whole different level.
You can't use novelty to turn her on, not at this point at least. You need to have her desiring more than level 2.
She needs to feel so in love, that she is dying to express it in every way possible to include with her body.
Ever feel so in love that you want to do anything to make your partner feel what you feel? To include a good romp in the sack?
Well that's what you need to be going for. Technique and stuff is great, but it's a little like putting the cart before the horse, or however that saying goes.
I recommend the 5 love languages, and passionate marriage, both very good books.
