Is it normal to be this possesive?
One of my close friend, recently met a girl and helped her out a lot few months ago and they became quick friends from then, but over the past few weeks I have noticed that this girl attraction towards my friend has started to cross boundaries and she has become possessive of her, so much so that she has gone out of the way to sabotage any personal relationship that my friend has,be it by getting her isolated from her close friends or going out of the way to get her fiance to break the engagement with her...and at times becoming so paranoid that she is not even happy seeing any one close to her...am I looking too much into this and see something psychologically wrong here???