Is it normal to be obsessed with a girl?
It’s common to feel intensely preoccupied with someone you like, especially during a crush. It’s worth paying attention if the fixation is taking over your life or pushing you to ignore her boundaries.
People often use “obsessed” casually to mean they think about someone a lot, replay conversations, or get butterflies over every little interaction. That kind of intense crush is pretty common, even if it can feel a little ridiculous while you’re in it.
The important distinction is what you do with the feeling. Respect her privacy and boundaries, and don’t pressure her or keep contacting her if she isn’t interested. If thoughts about her are making it hard to sleep, focus, or enjoy anything else, it may help to create some distance and talk it through with someone you trust.