I think it's a bit sadistic to have a friend who has the hots for you, but you not for him. That type of friendship will not work out for obvious reasons and will only be a source of endless misery for the guy. Best is to let the friendship go.
Don't cry, don't regret and don't blame
Weak find the whip, willing find freedom
Towards the sun, carry your name
In warm hands you are given
Ask the wind for the way
Uncertainty's gone, your path will unravel
Accept all as it is and do not blame
God or the Devil
~Born to Live - Mavrik~