3. He is a drinker
You are not losing anything at all if you say good bye to a drinker. People who are addicted to alcohol will turn your life to hell. Do not even try to build a relationship with a drinker. Just imagine what it’s all going to be like in the future if even on your first date he gets drunk? Be careful with people you go on a first date with. Stop any kind of contact if you feel that something is going wrong. One glass of wine is not a big deal. However, if he keeps on ordering more, it might be a bad sign.