Is it bad that I still have feelings for a girl I dated 5 years ago
Do you have any kind of relationship now?
No, we're not still in touch.
Thinking that much about someone you haven't dated in five years isn't healthy. It's good to move on to new things and people in your life.
I know but I still love her.
I know that it can be hard to get over someone that you love, but you really should consider beginning to date again. Wouldn't you want to feel that way about someone who feels that way towards you? I'm sure you'll find someone once you start looking.