I approach people all the time now; if i have something to say, I'll say it. But tonight I was at a concert when a group of girls approached me and my friends. I was adding to the conversation but the chicks were way more into my friends. My one buddy, who didn't really speak at all, ended up making out with one chick.

TL;DR: What are the most important attributes that will make my speech captivating and won't make me sound like a little bitch?