honestly, i really loved they were best friends for 9 seasons. i mean, it was a real friendship, they trusted each other, they supported each other, they were brotherly in love. lucas and haley taught me how wonderful is think about the fact that you can bank on someone on the face of the earth.
i also think haley was the only character in a position to be the best friend of a boy, in this case lucas, because she was real, pure, honest, mature and ready to have a relationship without only think constantly about sex!
but this is only my opionion.
what do others think about? is there someone who wants to share his/her opinion with us? :)