What does it mean when a guy looks at you with a very intense, serious stare and expression?

[HoneySpiceSugar]

He's spoken to me a few times, smiled at me and looked me deep in the eyes, even from a distance. He's always checking me out but lately he's started looking at me with a very serious expression and with no smile on his face.

Does it mean he's upset with me or I've done something wrong/ to make him mad and angry?

[itunder]

If he's giving you a stare like that he's either to shy to ask you out, knows your committed to someone else, or upset that you haven't made a move. Most guys are shy around certain females so if your into him talk more. If your not, than just treat him as a friend and see his reaction.

[aMuse]

lol, no not upset... He probably thinks you are kind of cute and is observing your behavior/personality.

[MonicaFox98]

He's probably just deep in thought that's why he was making a poo face. Lol! Actually when you sed he was staring at you all intently the first thing that popped in my mind was a baby making a poo face. Hahahaha :)