What does it mean If guy checks up on you?

[Jaylaloveshtown]

I notice that my crush always passes by my class and looks inside at me. If he doesn't see me early in the morning which is every morning but his friend sees me then they'll pass by my class later on that day. When they pass by my crush will look inside at me. I also notice how he does this everyday. What does it mean If he keeps checking up on me everyday?

[crazyincalifornia]

He's in love with you, in heat at least.
Enjoy.

[reptocarl]

He likes you. If you like him then ask him out