Why does he want me to stay the night every night no sex involved?

Short story: Yes we have fucked a couple times, but recently we haven't as much. He has been wanting me to stay the night all the time. Can someone explain to me why he is always wanting me to stay the night. No be we dont fuck all the time, but when I stay the night we normally cuddle that's it.
Why does he want me to stay the night every night no sex involved?
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