In Love<br>Chad had been friends with Will for thirteen years. He was basically family. The fact that Chad was in love with Will's sister caused a problem. He had basically watched her grow up from a child. Will just wanted Chad to be happy so he supported it after a while.
chad and will are 13 years old
the passage only states that they  have been friends for 13 years  
( z1 and :op ( z2 person :name ( z3 name :op "Chad" ) ) :op ( z4 person :name ( z5 name :op "will" ) ) :age ( z6 temporal-quantity :quant 13 :unit ( z7 year ) ) )