Why didn't he text me back?

We were texting a lot all day just having fun since he was at work. We took a break for a bit and he texted me some before he had some fun with his friends and he didn't mind, I told him it was his choice if he felt like talking. It slowed down the later the night went but I know he was busy and then I sent another text as a joke, but I haven't heard from him since and I know he's been online too. What does this mean? Does he not even really care or is interested? I guess I won't be texting him until I hear back from him :/

He's also not at work, he was with his buddies and he has weekends off but he's been online on his phone but no text back... We aren't dating, but I do like him a lot. I guess I'll see if he's interested and if he'll make the move..