He saw the way you acted. The withdrawal from physical touch, the incessant need to align and reorganize your belongings, even the inability to eat in the common area.

But he saw your father, a military man, and instantly realized there was a stark contrast between the two of you.

You were withdrawn, antisocial, temperamental. Your father, however, was extroverted, kind, patient.

“Excuse the interruption, but may I come in?”

He was invading your space, and he knew it.