"I was alone to begin with, so there's no need to worry over my feeling sad about it." Look, see, he's fine now! Perfectly unbothered by his unexpected return to eternal solitude!!

He might secretly be a bit of a drama queen. Walking along...looking calm and indifferent and solitary.....never mind the fact he's technically not alone right now.

"Your concern is appreciated, as is your assistance so far. As for talking to others...I can assure you I'll do just fine without."