I'm angry at my ex-girlfriend for talking to the guys that liked her
Why do you think you get angry if she talks with those guys?
She was talking to them because they give her unlimited amounts of free beer.
She is your ex and if she wants to talk to other guys then she can. You shouldn't be concerned with who she is with. You should focus on your own relationships and see if you can find a new person in your life that won't make you feel jelous.
That bitch. She shouldn't be allowed to just talk to anyone she wants. I'm going to make my current girlfriend watch every message she writes to make sure she doesn't say anything to a guy.
I see that you already have a new girlfriend where I do not recommend you involve your her with this as she may also find the situation odd and may see that you're still entangled with your feelings with your ex and she may end up breaking up with you.