My pup loves all humans I don't ever want him getting iffy or ready around anyone. Bulldogs are supposed to show love and human affection with all people in general. Anyone can walk up to my dogs and they get greeted with loving licks and I have 2 kids. This is the way these dogs were bred to be. A dog who is skittish and drawn back or unsure of itself or it's surroundings is usually a fearful dog or showing dominance over it's territory. A confident dog will always remain sure of itself at all times in any given situation they don't feel threatened by new people or new situations. Your pup doesn't need to man up he's a puppy he will mature over time as he grows so will his personality. These are not guard dogs as someone already stated. If you want a dog that's going to protect your family there are other breeds out there for that very purpose. Now is a very important time for this pup to be socialized in as many situations around as many different people as possible. So don't limit your pup.... socialization from a young age is key to raising a stable confident dog in the long run. The only thing these dogs should show any signs of aggression towards is other animals because it's in their nature they were bred to fight other dogs so the instinct will always be there and should be controlled by a responsible handler through training and preventative measures. Good luck to you and your new pup.