Why would a guy deliberately interrupt you ?

This guy I know would deliberately interrupt me when I'm speaking, even when I am speaking to him he will start talking when I'm already talking or if I'm talking to someone else he will ask me something when I'm already talking and I would have to stop what I am saying to answer him then return to the other person and then he would do it again. witch I really don't understand because usually he shows signs that he like me constantly smiling and staring etc but this to me seems to show me that he doesn't seem to care really for what I have to say.

If there are any guy's here that has done this could you explain why because it's confusing the hell out of me.
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+1 y
Ok thanks for your answers.

It is much appreciated and seams to make seance.
Why would a guy deliberately interrupt you ?
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