So how long have you know Jack ?   We go way back.We ' Ve known each other since we were toddlers .   Really ? You guys must be really tight .   Yeah , We're buddy-buddy still .   He seems sincere , and trustworthy .   Well , he is , but he can be conniving at times .   What do you mean ?   Well , I know that he would never stab me in the back.But I've seen him double cross other people .   Oh , my ! Really ? I never thought he would be like that . 