noun
no romantic interest; just friends; zero chance
Slang used mainly in romantic contexts to mean there is absolutely no romantic interest or chemistry. Often used when someone is friend-zoned. Literally 'zero pulse', implying no heartbeat-like excitement.
See also: 脈なし
彼に脈ゼロって言われた。
He told me he has zero romantic interest in me.
デートしたけど、脈ゼロだった。
We went on a date, but there was no spark at all.