I'm mad at my girlfriends hypocrisy
What is it your girlfriend being a hypocrite about?
She hates people who eat meat but eats fish all the time.
If this upsets you then you should talk to her about it. Tell her that you are tired of her complaining about people who eat meat.
She's half-assing this new vegetarian lifestyle she want to have.
Well tell her about how you feel and how she isn't really a vegetarian. Best it come from her partner--someone she trusts--over someone else.