He's gone too soon.
He gave her an unfamiliar but not unpleasant feeling. She shouldn't, has no right to say, that she was in love. She hardly knew the man. Their encounters, all three of them, were brief and fleeting, with more than their fair share of angry, frustrated words.
All she wanted to do was help him. But he turned around and broke her heart.
He snapped it in half, and he doesn't even know.
A single tear escapes her eye, and she wishes he had left her on the ship.
She will never see her time traveler again.