So if you see someone yawn, you find yourself following. &amp;lt;i&amp;gt;Just use that. &amp;lt;i&amp;gt;You yawn during class. &amp;lt;i&amp;gt;But if Seung Jo yawns after you, &amp;lt;i&amp;gt;then that means he has glanced over at you. &amp;lt;i&amp;gt;If he's not interested, why would he look at you? 