Yes, boys do notice girls' nails. Many men consider well-maintained nails an indicator of a woman's self-care and attention to detail. Some guys even find elaborate nail art appealing and may compliment a girl's unique nail designs. While not every guy may pay close attention, some find it attractive and suggestive of a woman's personality and style.
It's important to note that individual preferences vary widely, and not all guys will be equally observant of nail details. However, many acknowledge that nails can be a subtle but noticeable aspect of a woman's appearance.