Its a sign isnt it...

Hi everyone, I met up with someone for the first time yesterday, everything was going great until today. He's gone super quiet. Granted he told me he'll be busy and he'll talk in the evening (which it is now 8pm - no attempt to talk is made) and we have been speaking everyday for 3 weeks before meeting. We met and he asked to see me next weekend and we had planned a place. We texted some more before bed. But fast forward to today he's gone super quiet and i see he's online often. I know what this means i dont think he is interested.