Budget for eating out?!

My husband and I have been wondering where all of our money has been going... I know we have been going out to eat too much but I never realized how much it costs. I added up the cost of meals out and coffees in the last month and it was $1,020. I'm so embarrassed, I can't believe we had to dip into our savings account to pay a couple bills when we were wasting money every week on eating out.
We are starting a new budget and I'm curious how much you budget for going out to dinner? We are expecting twins in September, we really need to make a budget and stick to it so we can afford all the new changes that comes with babies.