It means that your crush noticed you, and wants to talk to you but might not know what exactly to say.
there grining
It sounds like they have a crush or they were just looking at you. If they do it a lot, they probably like you. Try talking to them a little more, and be a judge as to whether they are into you.
The person could be thinking of something funny, or he/she is in good mood or the person is smiling at you.
i think someone has a crush
She probably has a little crush on you. or she's wondering what's on your face.
What does it mean when my crush keeps checking me out?
woman crush wednesday and man crush monday
Your crush is paying attention to you.
It means that your attraction for your crush is waning.
that they probably have a crush on him to.
When your crush acts mean it means that he likes you but he doesn't want to show it.
They could be an insecure person; in some cases, a crush is mean to you to hide their true feelings.