A fuck buddy is someone you have an explicit agreement with to fuck each other but you know you don't want a relationship. I don't see how you can be attracted to someone without wanting it to develop further but many people here seem to think they can.

The developing part above is not a fuck buddy, it's someone you're with that you're both attracted to each other and are probably having a relationship with but it's a grey area at the beginning of a relationship because you know you like them and probably want a relationship but you're finding out about each other. The intention is to see what happens and maybe it will develop well. The intention of having a fuck buddy is not for it to go anywhere... ever.