While most men can be turned on in an instant, women often require more time. Try kindling your wife’s desire to get intimate with you by letting her know she is constantly on your mind.
Flirt with her through phone messages or chats via the computer. By "setting her on fire," she will be likely to jump into bed with you by the time you get home!
In the book, Christian Grey always lets his woman know that he desires her, so go ahead and do the same with your wife — you don't have to be a young handsome billionaire to do so.