hmmm.. good question.

1- someones sense of humor
2- if i can mesh well w them - like how easy it is to talk w them.
3- voices!!! its a big thing for me, if i like their voice ill be able 2 talk to them more
4- if they are ok w ppl beign clingy (not to an extreme extent but just a lil)
5- uhh.. idk... im kinda lost..