if he snuck into my house i would b like "wat r u doing here like u can stay but y r u here?" (if we have never met b4. but if i knew him id be like " u know u could have gone throught the frount door" and laugh my ass off
i'll kick him out...he wasnt supposed to sneak in my house anyway plus he's gotta gimme da reason why he did that or i'll call the cops xD im not a fan of him but he's pretty cute
i would ask him why he was here and then i would ask if he wanted to hang out or something, myabe something he wanted to do to get away from his screaming fans 9including me but he snuck into my house in this answer)
I would be really really angry but happy at the same time.First I would think"wth is he doing here!!"but I would also think"OMG JUSTIN BIEBER SNEAKED INTO MY HOUSE :D"hahaha =)