As he notices that Bo had to turn away from him for a bit due to the tears, he decides to wipe them off as much as he could. A difficult thing to do, but he’s going to push through against them. And there is no way that he could just leave this mirror dimension on his own right now.

All he wants to do right now is to reach out to her and lend her his ears. He has already known by now that some of the adults he knew in his world (like Snape and Dumbledore) did a bunch of questionable things in the past despite being decent people in their own way and he himself too did commit some of his own questionable acts as well.

“Oh no. I’m not ready to leave just yet. I can handle what tales you are about to tell to me. Trust me, I’m willing to listen.”