My best friend thinks i'm her destined husband. she believes it so firmly because according to her, a fellow christian brother had a dream of her getting married to me, also her mother whom she she so adore when it comes to spiritual issues told her same just last December when she got home, and personally she became so close to me because she prayed a prayer which God answered according to her.

She is so obsessed with these facts that i sometimes don't want to hurt her. Though she is a wife material and of the same age with me, she is falling short of one of my criteria of a wife which is "perfect beauty". Sometimes when discussing as friends, i tell her that I'll get married at the age of 32 to 34 and each time i say this she feels unhappy.

We some times play but for the past 7 to 8 years that we've been friends, we have never defiled ourselves.
what do you guys think

Clearly tell her that you are not interested so she won't bother your life or attempt to disrupt your flow.

But why will u be a best friend to a girl for 7 - 8 years. You deserve what you are getting from her