Is he just testing my patience?

Hi. I am just very confuse with this guy. First, we have made plans to meet, but he backed out the day before we meet saying that he is very busy with work and that he is still at work when he texted me (past midnite). A few days ago, I texted him asking, if he's still keen to watch that movie with me, and he replied back with an 'of course', but when I asked him when is he free, he went silent on me. I've not heard from him since, its been 4days. Is he just plain testing my patience, not interested but can't say so, or he is just busy? He is a scorpio by the way, if that helps.
Is he just testing my patience?
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