We all get drunk and make an ass of ourselves at least once in our lives. It just means you're a person, and being a person is a good thing.
But your friends sound like super jerks, so maybe you might want to make some new ones. You're right about not getting drunk from one glass of wine. I'm a lightweight, both metabolically and literally, and even I need at least a couple to feel good enough to post highly personal things on a public forum. Could they have done something to your drink?