Why would he leave so much of his important stuff at my house?

Soooo i have this friend. I can't ever tell how he feels about me. When he is drunk he gets really flirty and lots of hugs and little touches and he will sometimes fall asleep cuddling. Its never gone beyond that. I kind of want it to but he is a known player and i know he has several women he is talking to and seems like it runs a big risk of heartache for ne. But the second he wakes sober he jumps away like i bit him and keeps distance. He calls me sister and says he loves and cares for me, but he keeps it more distant than when he drinks. Lately, he intentionally is leaving stuff that is important to him, like his late fathers watch, and other things that i know mean a lot to him, at my place. I dont mind, but given as how he seems to have set some boundaries when he is sober, am confused on why and what it all means? Do players ever grow out of it?

Why would he leave so much of his important stuff at my house?
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