Why doesn't my BF want to sleep over anymore?

My BF of over two and a half years used to sleep over at least once a week. He owns his own home about 40 mins away and has several dogs. As of early this summer he has slept over maybe a total. of three times. When I asked him about it the first time he expressed when he sleeps over he starts his day way later then he intends and also needs to attend to the dog. I told him I understand. Just recently I brought it up again and told him I missed him sleeping ove. He says "I'm always sleeping what are you talking about" (like he didn't hear me correctly). I then say "I meant with me" he says "I fall asleep w you on the couch" and got quiet so I said s bit sadly "I guess you just don't want to' he says "oh stop"

What gives? Why won't he sleep over anymore?
Why doesn't my BF want to sleep over anymore?
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