Help - I Am Bored Of My Married Life

I have been married for past 13 years and have two daughters.

I really respect my husband and both of us have always stayed loyal towards each other. But with time, our married life has become really mundane.

Help - I Am Bored Of My Married Life

We return home late from our offices, help kids in completing their homework, and crash on bed after dinner.

Weekends are also spent in looking after household chores and giving time to our daughters. It seems our marriage has lost its spark. 

We do not enjoy having sex anymore, nor do we have a good time when we go out on dates without kids.

What should I do to spice up my married life?