Q: Why do guys act differently around their friends?

A: This is something that is very important to watch out for in a guy. It is one thing for them to have a slightly different demeanor around their guy friends, but if they are a completely different person with their friends, then that can be a big red flag. If you are going to be with someone, you want to be with who they really are, not with who they think they have to be around you or who they are when they are not with their friends.