I really like this girl who more or less feels the same way I do. We are both in the final year of college and next year will most probably (~95% chance) be in different cities going to grad school. I asked her out and she agreed. But she made a point to keeping things casual and not serious. I agree with her. But I myself have never really been in a "casual relationship." So how do I act, how often I see her, how do I show affection etc. etc. to keep it casual? It would help if you can list what makes a relationship serious as well. Thanks.