The context of the following conversation is Robin's brother was hungry, so Robin cut the sandwich in half.:
Robin says oh my brother is hungryx, too..
The friend responds You only have one sandwich. What are you going to do?.
Robin responds That's not a problem, I'll cut it in half..
The friend responds This is very kind of you?.
Robin responds yes of course, why wouldn't I?.
The friend responds This is very kind of you..