My boyfriend is ignoring me?

He got home late last night. We had gone 9-10 hours without talking that day and he got home around 2:30-3am ish, we talked for a bit, ended up having a mini discussion. (We both got a little mad, but we fixed the issue) but after about 5-10 minutes of fixing the issue. (4:00am ish) he just stopped replying. I stayed up waiting for him till 6am and sent him a message goodnight, it's 3:46pm right now and he hasn't replied, he hasn't even read the messages. I texted him a few minutes ago saying good afternoon, and will wait and see.. but I really needed to vent about it.. does anyone else's bf do this?