Why do boys make me want to throttle them!?

Honestly. I'm so annoyed/angry/a little sad.

I was fine before he messaged me. I want working on my story, listening to awesome music, and having this wonderful feeling of life at that moment being enough.

Then he messaged me for sex. I want to throttle him for ruining my beautiful moment! I want to kick him for taking away the amazing-ness of my new album! But most of all I want to hurt him for taking away my flow for writing.

Why do boys do this stuff? Why?

He doesn't want to date me. Am I sending out a vibe? I'm just so...I don't know even know the emotion name for how I'm feeling.