When I'm in different places I behave differently as well as with different people, I know that they are all bases of one personality, however this is where the problem comes to play.

When I am alone, I have no real sense of who I am.
When I am in the same area as my Family, I feel great distaste for them, I love them but feel great resentment towards them. They lack intelligence, some more than others. There is also ALOT of tension
When I am in the same area as my best friend I feel a mix of feelings, from distaste to happiness all at the same time, also a small amount of tension.
When I am in the same area as people who I know not, I feel indifferent, I care not about any of them as long as they leave me alone.
When I am in the same area as my boyfriend I feel a STRONG mix of feelings, from annoyed to loving. There is a good bit of sexual tension as well.
When I am at work I am again indifferent, however I behave as the nice girl.
But one thing is common among all of them, I am very blunt, and I do not take there feelings into account whenever I speak.

No. You're just human. Everybody has different sides to them. 

Nope, perfectly normal.

Okay, I least I'm not the only one. Thanks

My two best friends both have multiple personalities, I don't think you do. When they transform they have no conciousness or memory of what happened when another was in control. Though one of them can actually hear and see the others in their head. I think you are just confused about things.