I'm thinking of ditching the girl I'm dating on her birthday to see my friend in the hospital instead. Is that wrong?
Is this your friend in the hospital nice to you and kind?
No, he just puts on an act, but I still want to see him
It's usually a bad idea to ditch your girlfriend, especially on her birthday, because this is a special occasion for her that she has been waiting for. However, if your friend was in an accident, then it is okay to change your plans to check up on him, even if he is not always the best friend to you.
You're just an internet stranger, how do you know all this?
You need to talk to your girl and make a plan for this. You can go see your friend but maybe make it up to your girlfriend later and make plans with her too.