Not and acquaintance you get on well with, but a close friend, who you confide in and have fun with?
Until recently, I would have said of course it is, but lately, I'm starting to think that the things that make him a good friend also make him attractive IYSWIM.
e.g. DH is not a traditionally attractive man, but to me he is, because (cheesy) I know his inner beauty
So doesn't the same thing happen if you have a good friend, the closer you get, the more you know about each other, the more time you spend together, the more fun you have, the more you rely on each other, gradually, you grow on each other and the friendship becomes something else. Is that inevitable/usual?