What should I do?? (Stuck, are u out there?) \:\)

So H showed up @ the house last night around 11 pm with not just an overnight bag, but ALL his stuff. Him and his mom had a huge falling out and she kicked him out. So he is back in our house now ("temporarily"). Please give me some advice on how to act. He's been gone 2 mths and I don't know how I feel about him being back. Especially cause its not because he WANTS to be back.

I was doing so well moving forward, I'm so afraid this will set me back emotionally.