I realize that as a man with limited sexual knowledge I shouldn't be giving advice on such matters. However as a husband to two women (not at the same time, thank you very much) I do feel I can offer some guidance on this subject.
The men I'm trying to help are the husbands of the world. As far as you men who have girlfriends, or fiancΓ©s or even those 'living in sin' as my mother use to say, you may want to keep this text for future reference as your present situation is completely different from ours. For you men are still 'single' by definition and as long as you haven't 'bought the cow', (another saying from my mother) you are probably still getting free 'milk' on a regular basis. Although you 'single men won't believe this at this time but once you she gets you to put that ring on her finger regular sex is a thing of the past.
To most married men the question of the ages is not how do we achieve world peace, but what happened to that wild sex freak that I married. It's almost a guarantee that all that sex on the beach and blow-jobs as you drive down the freeway, in fact just about any blow-jobs disappear once your wild girl friend becomes a proper wife. It's just a fact of life that a woman who has to wash your dirty underwear has no desire to suck your cock.
Thus, the question is how you convince your wife to have sex. Many feel that liquor relaxes the wife and loosens her libido enough so she'll have sex with you. Although I agree with this, it is a slippery slope and needs careful measurement because just enough and it's loving all night. Yet just one once too much and you have a sleeping wife or worse one who's throwing up all night. As much as wine is all right whine is not. You may whine and you might beg but all you're doing is losing what little respect you have left and believe me you're still not getting any. Bringing your wife flowers is nice but it is nothing but a gesture and unless she is already in the mood, it's not going to get you laid.