Oh, and I was also figuring it's not the first time ever Pietro has left for a little while? I suppose he might have been more careful about communicating before, but I don't feel like he's sticking tightly to the school all this time. Definitely home and where he spends most of his time, though.
If you've got anyone who might feel/interact positively toward Pietro (or even just Pietro in certain moods or mindsets, he's got a variety), that's looking like the general gap in Pietro's connections at the moment.