A woman's imagination is the single most useful tool in your Game arsenal. Every technique, every casual response, every gesture, intimation and subcommunication hinges on stimulating her imagination. Competition anxiety relies on it. DHV relies on it. Sexual tension (gina tingles) relies on it.
This is the single greatest failing of average frustrated chumps; they vomit out everything about themselves, divulging the full truth of themselves to women in the mistaken belief that women desire that truth as a basis for qualifying for their intimacy. Learn this now: Women NEVER want full disclosure. Nothing is more self-satisfying for a woman than to think she's figured a Man out based solely on her feminine intuition (i.e. imagination).
When a man overtly confirms his character, his story, his value, etc. for a woman, the mystery is dispelled and the bio-chemical rush she enjoyed from her imaginings, her suspicions, her self-confirmations about you are GONE. AFCs classically do exactly this on the first date and wonder why they get LJBF'd promptly after it - this is why. Familiarity is anti-seductive. Nothing kills Game, lust and libido like comfortable familiarity. Despite their common bleating filibuster tactics, women don't want to be comfortable with a potential sex partner, they need their imaginations stoked to be excited, aroused and anxious to want sex with a potential partner.
In an LTR/Marriage there's an even more critical need to keep prodding that imagination. I would go so far as to say it's imperative for a healthy relationship, but then you'll ask, how do you go about that when your LTR GF or wife already knows your story and the familiarity becomes cemented in?
The easy answer is never let it be from the outset - the health of any LTR you might entertain depends and survives on the frame you enter into it with. The foundations of a healthy LTR are laid while you're single and dating non-exclusively. I've yet to meet the guy who's told me he's getting more frequent, more intense sex after his LTR / Marriage / Live-in situation was established. The primary reason for this is the relaxation of the competition anxiety that made ƒucking you with lustful abandon in your dating phase an urgent imperative to get you to commit to her frame. And that's the crux of the matter that so many guys fail in, they surrender the frame BEFORE they commit to an LTR. They believe, (thanks to their Matrix conditioning) that commitment is synonymous with acquiescing to her frame control. Combine this with anti-seductive familiarity (something HERO is now experiencing first hand) and the growing commonness of your own value because of it, and you can see exactly why her sexual interest wanes.
So what do you do to prevent that? First and foremost, understand that whose frame you enter into an LTR sets the foundation of that LTR. If you find yourself buying into an "it's women's world and we just live in it" mentality where your default presumption is that commitment means she wins, you lose and that's just how it is - don't even consider an LTR. She enters your world, not the other way around.
Secondly, you need to cultivate an element of unpredictability about yourself prior to, and into, an LTR. Always remember POOK's proverb, Perfect is BORING. This is why 5 minutes of Alpha trumps 5 years of Beta. Women will cry a river about wanting Mr. Dependable and then go off to ƒuck Mr. Exciting. In an LTR it's necessary to be both, but not one at the expense of the other. Too many married men are TERRIFIED to rock the excitement boat with their wives because their sex lives hang in the balance of placating to her and her already preset frame. She must be reminded daily why you're fun, unpredictable and exciting, not only to her, but other women as well. Nothing confirms Alpha cred like having your wife's girlfriends admit their attraction to you. This requires covertly implying that other women find you desirable. Women crave the chemical rush that comes from suspicion and indignation. If you don't provide it, they'll happily get it from tabloids, romance novels, The View, Tyra Banks or otherwise living vicariously through their single girlfriends. In the prolonged absence of excitement women will find it or create it for themselves (i.e. singing in band with a hot guitarist at age 40)
By playfully staying her source of that rush you maintain the position of stimulating her imagination. Married men, who were defeated before they committed, don't think that elements of Game apply to marriage out of fear of upsetting their wives frame, when in fact C&F and Negs and many other aspects work wonderfully. Just kicking her in the ass or busting her chops, playfully, is sometimes enough to send the message that you're fearless of her response. You can break her frame with ****iness and the imaginings that come with it.
Breaking from an established, predictable familiarity is often a great way to fire her imagination. Married guys will report how sexual their wives become after they get to the gym and start shaping up after a long layoff (or for the first time). It's easy to pass this off as looking better makes women more aroused (which is true), but underneath that is the breaking of a pattern. You're controllable and predictable so long as you're pudgy and listless - what other woman would want you? But start changing your patterns, get into shape, make more money, get a promotion, improve and demonstrate your higher value in some appreciable way and the imagination and competition anxiety returns.