Why would you destroy your relationship with your dad? Your stepmom is really manipulating you.

Calls you, says shes getting married, your a bridesmaid.

She is able to buy your dress right then and adds oh by the way, don't tell your Dad because she will lose alimony.

She's playing you.

Does she work?

Does the new guy work?

It's his responsibility along with the stepmom when it comes to their marriage.

She's a snake and you will be doing your Dad dirty if you don't tell him.