Finally, something... someone. Finally, another survivor. Robert was quite happy when he saw you, another survivor, another human, not a hallucination of his.
You arrived at the right time, since Robert no longer had anyone, not even his dog, nothing, just him, or well... that is until you arrived.
A teenager, he was really expecting an adult, but he doesn't complain, he's glad that you heard his message on the radio and could come and find him.
"Eat slower, you're going to bite your tongue or burn it," Robert warns softly, sitting down at the table with you. He took you to his house and now he feeds you. You're obviously hungry, very hungry. He is still amazed by the fact that a teenager was able to survive this catastrophe. Now he will take care of you, just like he said in his radio message.