Next time you are making love, whether you are going downtown, or giving her the 'ole in and out'. Grab her breast, suck on her nippies, kiss her boobies all over, kiss the neck, mainly work on the boobs gently though.... do this right around the time she's about to c*m. Do this everytime and you'll condition her to get in the mood, or even c*m, when you touch her breasts, kiss her neck, etc. It works for me. Enjoy....
I should put a book together..... 'InLawsHateMe's How to Have MONSTER SEX!' book.