Pretty much the norm today with religious youth who think they’re more righteous than others even though their standards of righteousness are narrow and often misguided.
Someone ought to tell this guy that even though his principles might be well-intentioned, his approach in life seems seriously flawed. He comes off as arrogant while boasting of his own virtuous standards in life. The following Ayah comes to mind (roughly remembered):
Do not turn your face away from men with pride, nor walk on this earth in insolence – verily Allah does not like arrogance.
(I’ll try to find the specific verse and citation)
The girl in the story seems like she’s genuine and honest, and meets many standards that he’s looking for at an outer level. Even if the guy thinks she has flaws, I’d much rather that this guy appreciate her honesty, and work on the perceived “weaknesses” gradually through example and model, rather than shunning her out. Alas, that’s what most of our religious community is like these days… abrupt and hasty in finding others’ flaws but without humility to accept their own failings.