transition.

as of late, i've been contemplating the transition between "just a friend" and something more with a bit of romantic zing. how is this done? honestly though. i've been told that the best kind of relationship stems from the friendship seed. this great, but how do you get there? a little water, a little sunshine? how do you do it with out ruining what you already have?  have they considered the possibility as well?  better question, do they want it too or have they permanently placed you in the "friend-zone". how do i find out?  if some one could only answer the questions that have consumed my day to day thoughs recently. i would love that.