Care and Affection

I decided to blog on this issue after seeing so many friends of mine behave in a similar way. People get close to someone, be it a girl or a boy, for different reasons. They get close to them due to certain features like speaking frankly, being bubbly, always smiling, being very cheerful, and bringing charm to the people around them. But once they become close, their attitude towards the other person changes. In the name of POSSESSIVENESS want them to stop doing it to others. Why do people stop their friends from doing what they liked in them?? Is this real love, care and affection?? why do they kill the kid inside the person in the name of possessiveness?