<human>: This has become a slight recurring problem that it's starting to bother me a lot. 

There will be days where I will chat with him over iMessage or Skype and he won't respond. Then I'll call him for some reason, and he won't answer. The next day, he'll call me or text me back with an excuse ("I was with friends/family. I was in a middle of video game.") I'll express that I wasn't exactly happy with him not responding to me all day but I'll usually distract myself enough during the day that I'm glad I got stuff done and I'm just kinda peeved but pretty much over it. 

But lately it's been happening more and more often. Just this week it's happened twice. I'm planning on speaking with him tomorrow (if he'll answer me) about how much it actually bothers me that he won't respond to me. 

I don't think he's doing anything shady. He's literally with me 6x a week, and I'll be at his place so much that I'm actually just going to my house to change or get clothes. But it's just super confusing that he doesn't respond to me when he's on his computer/on his phone so much when we're hanging out. I'm on my phone just as much so it's rare if I see a message from him I don't respond. 

It just makes me feel bad. Why doesn't he want to talk to me? I understand wanting a little break when we're not hanging out but we've been together for 2+ years. Half the time I'm just asking a question or sending a stupid link from Reddit but he just won't text back. I get being busy, but you can't respond literally all day? This is what I don't understand.

Can you succinctly summarize the text in 1-3 sentences?
<bot>: BF doesn't text or call back for a day sometimes. How do I phrase it to make it seem not accusatory? I've let him get away with this behavior before so it might seem like it's coming out of nowhere.