The thing that you really need to remember is that you have to make it clear right off the bat as to which type of relationship you want with the girl. If you start off by being friends with her because you just want to hang out with her, then she might ink that your intentions are just to be friends, and then you will be deemed to the friends zone for the rest of your relationship.
It is imperative to establish these boundaries immediately on the on set of your relationship, then, and only then, will you be able to get the girl of your dreams whether is be a casual dating or a serious relationship.