when is it time to let go?

I dont think its going to happen… i never really thought it was going to happen… at least since the night in his drive way. But some how i havent been able to let go.. let go of hope, let go of love… but i know the time is drawing near… he leaves in may. Maybe i should end it all now before then, but i cant, not when i know that after may i might never see him again. Its heartbreaking. I miss him already, i miss us. I could spend the rest of my life with him. I know i’ll spend the rest of my life thinking about him…. maybe thats all i’ll ever have.