(((((((( puffycloudz ))))))))
I'm so sorry you have had your world all shook up like this. I'm sure you are hurt and confused and angry.
Perna is right about this being a parental situation and not up to you to fix or even take sides for that matter. I know it's difficult right now not to take sides because you feel betrayed and can imagine how your dad is feeling betrayed as well. But, it's up to your mom and dad to figure this all out.
This situation doesn't mean that your mom can't still be your best friend hon. I know you see her in a different light because of her actions, but what happened doesn't change how she feels about you.
We don't always know what goes on in our parents lives together. I don't think it will help the situation for you or your parents if you judge either one of them on the merits of what you feel has been done wrong to either parent. If both your parents love you and you love them, you can be supportive to each one without taking sides or being put in the middle. I know this is easier said than done, but it is possible to do.
I hope you can find some patience and peace in all this. Give them a chance to work things out in their own way.....and continue loving them because they are your mom and dad.....they are human beings and they are not perfect (even if we like to believe parents can be).

sabby