There can be various reasons why a boy may start liking a girl after knowing her for a year and not showing interest initially. Some possible explanations include:
Getting to know her better: Over time, as they spent more time together, he may have had the opportunity to learn more about her personality, interests, and values, which sparked a newfound attraction.
Emotional connection: As they developed a deeper emotional connection through shared experiences and conversations, he might have started to see her in a different light.
Changed circumstances: Life events or changes in personal circumstances can influence someone's perspective and feelings. Something significant might have happened in his life that prompted him to reassess his feelings towards her.
Timing: Sometimes, timing plays a crucial role in relationships. He might not have been ready for a romantic relationship before, but circumstances or his emotional state might have changed, making him more open to the idea now.
Seeing her with others: Observing her interacting with other people, including potential rivals or suitors, might have made him realize that he doesn't want to miss the opportunity to pursue a relationship with her.
Physical appearance: While initial attraction is not solely based on looks, physical appearance can play a role in attraction. Perhaps, he started noticing her physical features more, which added to his attraction.
Chemistry and compatibility: Sometimes, chemistry between two people takes time to develop. As they spent more time together, he may have discovered that they have more in common than he initially thought.
Emotional maturity: As he matured emotionally, his approach to relationships and attraction might have evolved, making him more receptive to the idea of dating her.
It's important to remember that every person is unique, and the reasons behind someone's change in feelings can vary significantly. If he starts showing signs of interest, it's essential for both parties to communicate openly and honestly about their feelings and intentions to ensure they are on the same page.