[It looks like he has the other’s rapt attention, though he wonders to himself just how much Prompto comprehends the poem itself.

But for now, the rest is as easily quoted as the first half.]

‘Pretty joy! 
Sweet joy but two days old, 
Sweet joy I call thee; 
Thou dost smile. 
I sing the while 
Sweet joy befall thee.’

[The last line stressed and slowed, indicating its end. Only then does Prompto get any kind of thanks for the wayward compliment.]

…I appreciate the compliment.