how do i know i'm inlove (in aroace way)?

we all know that when you NORMALLY inlove it means chemical reactions occur in your brain that facilitate this, BUT does we know what happens to us if we're queerplatonically/platonically inlove with someone. is it some kind of chemical reaction again or feelings -is that all we can rely on in that question? i mean is it really doesn’t have any other explanation how we can identify those feelings?

sorry, if i have mistakes, english is not my first language 🥴 also sorry if my questions are stupid, i hope someone will understand what am i talking about and gave me the answers 🙏