new found sex drive

So I have been with my husband 13 years, and our sex life was very active in beginning . Then after kids and busy schedules it went to about 3-5 times a month. It was defiantly me, he always wanted sex and I was never in mood. I would enjoy it once we started but I never wanted to start. I went on vacation with my mother for 5 days. Now I want my husband everyday sometimes 2x a day. I hoping this last. I have been back from vacation 20 days and we have had sex maybe 25 times already. How can I keep this spark?