Theo was a little startled at first as Greg's hands came to slide under his body, but when he saw that it was just a hug he only cuddled back, his arms around broad shoulders, his hands still petting where he could, trying to soothe but not trying to stop the tears; he could tell when a good cry was needed and it seemed like this would do more good than bad, he hoped.
He let Greg cry against him for as long as he needed to, remaining calm and calming and accepting of how upset Greg was, not wanting to make him feel awkward and just wanting to be there for the boy the way he'd been for Theo, as far as he could recall anyway. There was still that leftover remembered fondness from times long gone as well.
He echoed Greg's heavy sigh with a slighter one of his own and didn't stop one hand from petting lazily, lost in it's own movement. "You don't have to worry." he said softly. "I won't tell anyone. You don't have to worry." There was no clue what Theo thought he was referring to just then, but his intentions were clear.