I'm upset with my so about communicating repeatedly with her ex.
What about that is upsetting you?
Because that is hurting me badly.
You should communicate how much it hurts you to your girlfriend. She may not be aware.
But I can't. I'm a coward and a pussy who can't be honest with her feelings.
Well i think if you brought it up with your partner then they would understand how it was truly making you feel. While it may be scary to let out your emotions, know that it is the only way to have a solid relationship. You are making a very important step!