I have a daughter who is 18 she will be 19 in June. She is also in college. I noticed and so did everyone else that when she turned 18 she changed. She thinks she knows it all and is always right. She is hardly ever home now. She has a boyfriend that is no good and uses her. From what we have heard from our friends who have gone through this it's the age.

When you turn 18 you think you are an adult and know everything. I know what your mom is feeling because it seems that I can do nothing right according to my daughter. We used to be very close but when she turned 18 that was it.

Also think of this, he is away from home and he might be scared some. Give it some time and give your mom some extra hugs. She is more then likely feeling that she did something wrong and if your brother is yelling and arguing with her she more then likely feels or is thinking "what did I do wrong". If what our friends say is true things will calm down. Just try and be extra nice to your mom. It's hard watching your kids grow up and leave and no longer need you.

Just be yourself. If he wants to play a video game with you and you want to play then do it. But if he starts to act mean then just walk away. Arguing with him will only upset you and your mom.

Take care