He started typing but, never finished?

This guy I have been talking to. We were snapchating. We have never met in person. We were sending video's then I stopped because, I was watching a movie. He asked me to send more videos but, I told him later because, I was watching a movie etc. He had said "your so fucking fine" I told him he was cute too n stuff. Then he asked cute enough to date you soon? I was telling him ! maybe but, personality matters too. Then he asked me to tell him about myself. I asked what do you want to know. He asked me questions, I answered them. He opened my message and, started typing but, didn't finish. Why would a guy do this? I'm kind of confused now.
He started typing but, never finished?
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