I'm going to pack up my stbx-roommate's things
Why are you doing that for your soon to ex?
2 years ago I found out that he was cheating on me and it made me feel like shit, and 6 months ago I find out he's still doing that and I'm tired of living with him. So I am kicking him out for good.
I'm sorry that they cheated on you again after you gave them another chance, you have all the right to throw their things out of the house and force them to move. You don't need any more pain given to you.
Thank you. I'm going to throw his stuff out of the window.
Throwing his stuff out the window is not a good idea. If you do not want to deal with him any longer then you are better off just letting him take his stuff.