how?

see, i know how to be a girl friend. a female companion, confidant, pal to a guy. once i get wind of interest beyond that of friendship, i get stupid. i don't know how to act. i analyze and re-analyze things. actions i would normally do without second thoughts are re-visited prior to enactment. why do i do that? don't you agree how stupid i feel right now? now, i've already told my friend johnny this --i don't want to be that girl. and i hope i don't turn out to be.

tell me, how does one become more than a friend anyway? anyone care to tackle this question?