Is it true or false that a kiss can change your mind about someone?

One of my best guy friends tried to kiss me a few days ago, who's been apparently hoping that if he kisses me, he might feel something other than the icks at the thought of kissing someone he loves as a sister. He was hoping he might feel chemistry that grows, some kind of spark, since we've known each other for a year, he's said that his hot and cold behaviour was a result of him wanting to be romantically interested and loving my personality, but not feeling sparks.

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4 mo
In my opinion, while chemistry can grow over time, a year is plenty of time to know for sure, if there's a spark, regardless of whether or not you've been intimate with someone. But I don't know, as I've not found myself in that situation before.
Is it true or false that a kiss can change your mind about someone?
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