Check out this helpful post from YourTango:
Mixing alcohol with dating can create a shaky cocktail.
You're on a first date and it's time to order a beverage. Should you drink?
It depends on your ultimate goal. If you're seeking a great relationship, then your first dateshould be all about discovering basic compatibility, including chemistry. Since alcohol fosters false chemistry, the first rule of dating and drinking etiquette is this:
1. Don't drink on the first date.
There's plenty of time to enjoy that little buzz together later, once you establish compatibility.
On the first date it's essential to be level-headed and to ask great questions, such as my all-time favorite suggestion for single clients: "How long has it been since your last relationship and why did it end?" If you are stone-cold sober, you will listen more attentively, learning far more than you can while drinking.
So now you're on a second date, and you've decided that it's okay to drink now. You order first, requesting your favorite cocktail. He orders second, and opts for an iced tea. Oops! Is this a dating faux pas or par for the course?
In the language of love, it's a problem. Here's why: Unconsciously we look for someone who is similar, with whom we feel in sync. Couples that last mirror one another in lots of subtle ways from the first date onward.
So, when he orders iced tea and you order alcohol, you are already out of sync. It's a tiny disconnect, but one that can influence whether or not he asks you on the next date.
To see the three other rules, head over to YourTango.