Does it mean anything if he treats me differently when it's just the two of us?

my guy friend acts a little different when it's just the two of us than when we're other people. does this mean anything or no?
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+1 y
just different. he kind of looks at me differently, talks to me differently, laughs more, and switches between being really jokey and being sweet. and he's usually less serious. and he mostly only compliments me when we're alone. then when we're with other people, sometimes he like starts to act like that to me and then stops. I don't know does what I just said make any sense? lol
Does it mean anything if he treats me differently when it's just the two of us?
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