hi scamp, i have the same problem exactly , and am exactly like you,
i can not help it, it is getting deeper and deeper every day , it is very difficult, and i make every excuse to talk to him or be close to him , i guess they know it , and they know they have to act nice cause other wise you will hate them , so they will be nicer to you , which makes it even harder for us to get over it, the thing is the only reason i live for now is a look from his eyes, i can not stop that feeling , although like you , i respect marriage etc but i always all the time think of him , and i even compare any guy who is interested in me to him , and reject them .