How do you get over unrequited love?

ok, hmmm where to begin! Basically i met up with an old work collegue/friend that i hadnt seen for 5 years and we got back in contact via facebook, we both had a thing for each other in the past that we have discussed recently and openly admitted to, at the time we were both involved with other people and so never acted upon it, now we have been seeing each other for 4 weeks and i have fallen in love with him, some would say that its too quick and just infatuation but i know how i feel and my feelings for this guy go way beyond what words can describe, however there is a problem, he doesnt feel the same, i have told him how i feel, well it sort of slipped out one day and we talked about it, he told me he cares for me deeply but does not feel that way about me, we have different religious views and his religion is a big part of his life, he does not believe in sex before marriage where as i have been sexually active for the last 5 years, so its a little differcult at times when i want to show him just how much i i love him by making love to him...but obviously things never go that far and i respect him for that, i dont want to come between him and his religion, hes quite conservative and im unconservative, two completly different people and yet if we dont see each other we miss each other like crazy and i feel somewhat incomplete and if i think about ending it as its the right thing to do i feel sick to my stomach and end up crying (not in front of him though...im not into the whole emotional blackmail thing) I need advice on how to let this guy go and fall out of love with him as i know im completly wrong for him and there is no future in it for us, and if we stay together then when its time for him to say goodbye im going to be in pieces...and i dont particully want to go down that road (seen my mum go there as i was growing up countless times) and advice...suggestions would be very much appreciated here, im completly at a loss as to how i can stop myself feeling this way and how i can protect myself from getting hurt in the long run...help!!!How do you get over unrequited love?
time...and alcohol :)How do you get over unrequited love?
it takes time