He might pressure you to drink with him, and even order a drink for you when you've said no. Order a soft drink for yourself or sip a glass of water.
Getting to know someone takes time and a cool head.
If you feel like you're being swept off your feet, take a step back.
When hormones speak louder than reason, it's time to be on guard.
In a worst-case scenario, you may be under the spell of a charming sociopath, or you might jump into a physical relationship you'll regret later.
If you're meeting someone for the first time, or you're chatting with someone you met in a bar, never go to the restroom and leave your drink unattended.
That is often the way date-rape drugs are delivered.
If your date is just a little tipsy and from what you know of him this isn't a pattern, maybe you'll want to consider a second date.
But make it with another couple, and don't let anyone who has been drinking drive you home.
Sometimes it can tell you what sort of person your date is attracted to, whether he or she is looking for a serious relationship, or has a history of brief serial relationships.