Please help my relationship! I need help :P

Ok so I really like this girl. and she really likes me. But she says she doesn't like relationships. I think shes just scared.
how do I show her that relationships are good and that we could have a really good one?

I suspect that, "doesn't like relationships" really means she's afraid to make any kind of commitment. If you read the questions in this forum you'll find that not all relationships are good and it takes a commitment from both parties to have a good one.

How will your life will be any different whether you call it a relationship or a friendship? If you think the word relationship is any insurance it will last, that's not true. Whether it lasts will depend on the bond between you no matter what label you put on it.