When you are much older, love easily survives without intimacy, especially since your relationship has stood the test of time. In that instance, intimacy is not required as much. But one has to remember that intimacy is not only physical.
In a younger relationship intimacy is very much required but do not see it as a confirmation of love, since the lack of intimacy can be a result of a wide array of problems (including medical issues).
Take a look at this article if you require more information on the lack of intimacy in your relationship.
