Yeh this is possible that he may have certain personal issues bcoz as he came back from the vacations he has started doing that so it could be said that some of his personal issues (i belive once he said to me as well y did i come back here. I was better there so might be thses things ). Any ways guys come on cheerup. No problem i will see him after eid.
Wishing you all a very happy Eid Mubarak.