wow, this is a scene right out of Moonstruck.

I hope it is resolved with as minimal pain as possible - if that's even possible.

good luck.

My brother in law is cheating on my sister and she already kicked him out



My niece is only 1 year old

Doing "nothing" right now, won't hurt.
Think about it. Abide by your conscious.

SHANNA, DiminutiveRocker, LleeLlee, UCantHavaDaMango, DiamondStuddedMercedes

Thank you all for your words of support.

1sexymf said:

anytime.

1sexymf said:

You're welcome sweetie! I'm keeping you in my prayers.

UCantHavaDaMango said:

Aw, thanks.

MuaPetahl said:

Ditto! You need to first go to the source, your dad. Once everything is out in the open, your mom can decide how she wants to handle the situation. By doing it this way, you'll be honest with both your dad and mom and really yourself too. You feel strongly about it and your feelings should be validated. If he is for sure cheating, that is really selfish on his part because his actions effect a grip of people (your mom, you, siblings, other family and friends, etc) Holding in all of the anger, along with the huge amount of stress you must feel is not good for your health. I hope things work out for the best.

I haven't read all the posts, but from what I gather, you need to confront your father first. You don't want to start something just from assuming this is what happened. Even if you're certain of it.
Talk to him, makes sure he knows that you know, and that he needs to be honest with your mother about this.
If he doesn't, then tell your mother.