how to fall out of love with best friend - feeling pants

Hello I really hope you can help me. I have fallen in 'love' (basically just a really strong, selfish desire to be with him and want him entirely with every fibre of me apart from my ration. It can't be love, love is not that desperately wanting i should think). I was feeling it happen in the last few months of the semester (but he definitely does not feel this way and I do not wish to express this as I am embarrassed that it has developed inside me). I thought summer would cure it (both travelled separately and I moved away for 2 months to do an internship. Not seen for 3 months. He called me today, right now, 30 minutes ago and God I felt such a strong desperate pang and couldn't speak properly. This is the guy who has been my best friend through my ex, through all of uni, i shared a bed with him for a whole semester like brother and sister and talked openly about life, advised him on his constipation, the philosophical merit of fight-club, penguins with and never ever thought I would fall for him but i have and i want out of this. Anyway please accept that there is no other thing for me to do other than fall out of love. He doesn't want me that way and I just want to go back to old days. I don't want to feel like this. Avoiding him is not possible, when uni begins we will be together constantly, he considers me his best friend and keeps telling me he cant wait to see me. What can I do other than wait for time to take it's course....? I guess is there anyone else who has been through similar who can just give me a ''there there, it will be okay''? Sorry for the rant. Thanks :)

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