Lying and Telling the Truth.

Why is it that when you tell a guy you like them and it isn't the truth,.. they believe you. Except when you are actually telling them the truth they don't believer you. Except its the same people. Like today i told Shariar that i thought he was cute and he said that i was lying. Even though i was doing it as a joke, I actually was telling him the truth. And the other day,  I told Bradley that i thought he was hot and he was serious shocked and didn't know how to respond. Boys are confusing. I'm serious. But even though i say things as a joke, there are times when i mean it. But they are too dumb to actually realize it. Just saying I can be a really bad liar.