DON'T CROSS THE LINE

Claire is too serious with the " don't get too close " rule .she was isolated when she was younger and find it hard to come out of her shell, most importantly there might be another reason why she doesn't want anyone to get too close to her and because dave willson happens to know a bit about that , that makes them sworn enemies and why he mustn't cross the line.....but then....then.... rules are made to be broken right??