as many love doctors would advice you, make a plan. what i would recommend is u, is to make a plan, firstly find out as much about him as you can, like his hobbies, where he goes, people he meets and anything and everything you can, take notes, obsereve everything carefully, and then plan your attitude, now you have more details than ever and you are ready to work, may be to start off with pamper him a bit, give him a little gift or may be two within a gap of 2-3 weeks, ( gifts based on his hobbies and all ), and a few flirty signals would do, when he actually starts to show a little bit of interest in you, its time to take a little bit of risk if you are willing to. its a common sayign that girls are jealous of other girls, but i guess the same goes for guys too, so just when you have given him the signals, and he has come a bit closer to you, its the right time to show him that u r wanted, how about introducing a new guy in the story for a while, talk to him about him, and then just start ignoring your crush a lil bit, for eg. when he calls up, just tell him that u r busy talking to so n so and u will call him back, do call him back but may be on the other day, not immidiately after you finish up with ur fake call. i have seen this working for many girls, and i knew a few who use this succesfully, the thign is there is a slight risk involved here, but trust me , if u think practically u have nothing to loose at all, because even if you arent able to arouse that interest in him, after the first 2 steps, i.e getting closer and moving away, eventually you would still stay in the position where you started from, it wount be difficult at all to be just good friends again, i would certainly go for this if i was u.
but i am sure many would tell u, keep it simple, but then again, its like investing in stock markets, the bigger the risk, the better the returns, but only if u r a smart investor, so temme what u decide, wish you great luck.
cheers
ashish