Why is he acting like this?

Me and this guy have had a situation-ship going on for awhile about 4 months. However now when he hangs out with me he just falls asleep. He is usually the one that asks to hang out then pushes hanging out till about 12am or 1am. Then he will stay the night usually watch a show then he falls asleep about 20 mins after, wakes up and we have morning sex then he leaves. Since it’s summer too we already talked about feelings and he wanted to keep talking and keep emotions involved instead of moving on and just hooking up or being friends. Opinions?
Why is he acting like this?
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