
You are so busy earning hard, raising kids, and other stuffs that you forget to give time to your partner.
Being married does not mean you are bound to stay together now, rather it means now you should give more time and importance to someone who is sharing his or her life with you.
Just plan a vacation with your partner and see how things change. You will see the magic returning. Possibilities are you might run out of cash, but then this is not the time to worry for cash shortage.