Why would a guy glare at a girl?

[Anonymous]

I saw this guy was just staring at me and glaring. I looked back but he's still with that same expression. Then afterward I could almost see the corners of his mouth turning up a bit. What's up with the mean look?

[ryanontario]

are you really good looking ? maybe he was checking you out at some point . or you did something to upset him . maybe think harder what happened

[Asker]

I don't know. I didn't do anything.

[Asker]

I was putting on my jacket and I pulled my hair out to the front.

[bwrd830]

Because the pretty to look at. Most people try not to stare but some just don't care.

[Asker]

But I thought people normally smile at something pretty, not glare.

[bwrd830]

Maybe it's beyond being pretty so they glare. Do you mean like a hateful glare tho, or like a mesmerized glare?