Ask Helen: How can I ask my partner for more intimacy?

Ask Helen: How can I ask my partner for more intimacy?

Hi Helen, I am a bit embarrassed asking this but my partner never seems to want to be intimate anymore. When we first started dating we were at it most days, often more than once a day but now I am lucky if it is once a month. We have been together for 4 years now and have one child. What am I doing wrong, should I approach this with my partner and how can I address the problem?