So, let's take it step by step. Usually, someone who understands listens to this aria for two things. A chest C and a high E. Those are the people who think about the measures, that kind of stuff. If you feel like it, look for the (in my opinion) unparalleled version of a vintage Pavarotti. He hits the chest C, stops, and says hey! But he delivers the high E in falsetto. Or you can listen to Gregory Kunde. He nails the chest C and the high E just fine. It's the rest that really sucks...
Well, you make me digress (I know, you do it on purpose). There's nothing here. There he is, who, come on, is cute, right? A little mustache, young, charming. Almost makes you want to say I’m not gay but...
Then she arrives. And then you say nooooo! And, nothing, they’re just really beautiful, him with the little mustache, her being young and pretty, and those who stage her like this...

Bellini - I Puritani - Credeasi misera (Juan Diego Flórez) 2009

ah! but the chest C and the high E? Nothing, my friend Dieghino (the best tenor in the whole wide world... No, if you listen to me, the SECOND best tenor in the whole wide world currently) just doesn’t hit them... they weren't there! I didn't see them! I have an excuse! (ps: it’s because they were serving sausage and potatoes on Via Griglia today... understand me, I'm confused!)