I do or i don't?

i am thirteen. my mom and dad got divorced 3 years ago. 2 years ago she met a man with a girl my age. she is in 8th grade, but it is only because her dad got her able to skip a grade because he knew the people (not because she is smart). i am in 7th. i really do dislike her very strongly. she is "city bound" and i've lived in the suburbs all my life. (big difference in personalites). I cannot stand to be around her. her mom and dad are also divorced, and her dad wants her to live with us and he wants full custody. that means id see her ALL the time. not only this, but my mom' house is a ranch, 3 bdrms 1 for me, 1 for my bro and one for my mom. theres NO room. and they said they wouldnt buy another house. IM NOT GOING TO SHARE A ROOM WITH HER also theres the issue with "this is my house not yours" and my mom said that they are going to have a formal wedding with just her, him, my brother and the girl and me. IN A MONTH. my mom says im being selfish. but its hard with a girl my age. HELP

1. Can you go live with your own father?

2. When you go to school, can you talk to a guidance counselor about this? Perhaps some family counseling is in order . . . . and mom will take this suggestion better coming from the guidance counselor (another adult).

3. Sweetie, I don't think you are selfish. I think you are thirteen. I'm a mom, and I wish you the best with all this. I think you should keep trying to talk to adults about this . . . your dad, your grandparents, your clergy person, your teachers, the guidance counselor, your principal . . . until one of these adults speaks to your mom and gets you some support.

4. I think sometimes parents get too caught up in their romances, and they don't take the time to think about how the romance is affecting the children. I think your mom needs to slow things down . . . slow things way down. If the parent's romance is affecting his/her children in a negative way, the parent needs to slow down. A child may often pick up on things the parent is not seeing.

5. Just because your future stepdad wants full custody, does not necessarily mean he will get it. He will have to go to court and try. The girl's mother may contest it. It may not be as easy as he thinks.

I think you need to explain to your mother (calmly) that you need your space and while you're happy that she's met someone, you don't think it would be a good living environment if you and his daughter had to share a room.
It's really important the way you say it- not to yell or make bold statements, just to stay calm and stick to telling your mother how you feel (rather than making accusations or talking badly of her fiance and his daughter).

you're definitely not being selfish. i'd be pissed too. If she gets on your nerves when you room together, get in her face and tell her to shut up. City girls can't fight.

:]

As a mother getting married and someone that comes from this situation at 15. But my mom died. Your parents need to be happy too. Are they? Can you really see that your mom is happy with this guy? I remember how hard it is too excep