Two things, first there is a huge difference between finding someone else attractive and lusting after them, sort of like the difference between having a beer and being an alcoholic.
Second, I'm going to play devil's advocate here (not in the literal sense) suppose you get married to a woman who says she enjoys sex often. This is very important to you, and right after you get married she does and participates as much as you both had discussed. Then she stops, she no longer wants to have sex at all. What do you do? Do you get divorced? Do you touch? Do you live the rest of your life miserable because she changed or lied? (Obviously this question applies to women also). Do you really think God wants you to be unhappy? There is nothing wrong with a healthy sex life in a marriage.