<human>: So, about a month ago my mom found out that my step dad had been cheating on her, this is the second time this has happened(that I know of) in a twelve year marriage. For the past month they've been trying to work it out but now they've settled on getting a divorce. 

This is happening at a difficult time in my life as a high school senior getting ready graduate. Frankly I don't know how I should feel, my step dad basically raised me but seeing my mom breakdown is killing me inside and I hate him for it. With everything that is going on I just don't know what I can do to make this easier for my mom or how this will effect this "transition" period of my life. Can you all tell me what I can do?

Can you give me the gist of the text in a nutshell?
<bot>: Step dad cheated on my mom. I don't know what to do to help her as I'm in a weird stage of life.