You meet online, swap a few messages over the space of a couple of hours just basic stuff nothing heavy. That's on a Sunday afternoon. He asks you out for a drink on the Monday morning... scheduled for Friday night. But then you hear nothing from him all week, no questions conversation interest nothing. Then he messages on the Friday morning to confirm time to meet that evening. Would you still go?
Yes - he's probably just saving real conversation for face to face.
No - he's completely disinterested and you are a back up because he had nothing better to do on Friday after all