how much look and personality matter in love!!!

how much look and personality matter in love


i hv often heard people saying when i saw her/him ,i fall in love with
her/him , not only this after they propose each other and marry too ,
is it really a love or just a attraction , i can't understand how a
person can fall in love without knowing other person ... so thats my
question " do i need to hv dashing personality for luv " .... plz reply