Is there ever a good reason for no reply?

Hi all,

Do you think there is ever a good reason for a guy not replying?

There's this guy who I've known for a few years. We hadn't seen each other in over a year and went for a drink recently but mainly to talk about career advice. That night I thought we got along very well and were like old friends. I messaged him a few days ago to ask if he wanted to have a drink again soon, this time without any mention of career advice and he hasn't replied which is unusual for him because he normally replies to my messages within hours.

Is it possible that there's a good reason or is the deafening sound of silence a clear "I don't like you!"

That, or he's taken, or has a busy schedule.

He's not that into you.....now you know how guys feel when you don't respond back right away.