Why are you being so nosy? YDI. Next time, don't look through other people's texts.

I bet your dad's favorite position is the Italian Chandelier. YDI, for going through his phone though. You wouldn't want him going through yours would you?

You ruined Christmas and know about your dads sex life now. Stop being nosey. You wouldn't want her reading your phone.

Bad step mom is going to turn into annoyed step mom if she finds out

As long as it's not under yout sheets you'll live.

You kind of deserve it for daring to look through her phone in the first place.

That's not enough bad karma for looking through someone personal things!

Looking at someone's phone without their permission is pretty rude. You will almost always see something that you shouldn't see or don't need/want to see. I hope it's safe to say you learned your lesson OP.

Well you put yourself in a awkward situation not only did you ruin Christmas, but you also know what your dad and step mom look like having sex.

Why would you look through your dad's girlfriend's phone? That seems pretty creepy.