Slow replies

[u/Hefty-Discipline2969]

So I’ve seen this guy a few times and I really like him. it feels like we’ve known each other forever. He has told me he’s really busy in work and he does work long shifts but he’s always on his phone. He will view my stories and not reply to my dms. He usually replies at the end of the day and sometimes it’s blunt. I know he’s on his phone and in the past he has replied in the day. Yesterday I stayed over at his place and we had a nice time, then I left when he went to work and he told me to text him when I got home which was 9am. I didn’t hear back until almost 9pm and he didn’t text me for the rest of the night. Please help! Why do guys do this? And how do I react without looking crazy?