What do you think about me yelling at this guy?
That is awful. Why would you yell at him?
I'm so much better than him
I think you are thinking too highly of yourself in this situation. It's inappropriate to yell at people. You shouldn't say things to people you might end up regretting later on.
I yelled at my girl and now I'm done with her.
See what happens when you yell at people. Not only that but he might retaliate for the yelling and beat you up. So stop yelling at people before you get hurt.