Am I over reacting ?

Okay so this is probably a reach but there’s this guy in one of my classes, he’s a year older and he’s new like as of this year. Any ways he used to sit on like other side of the table to my groups table where we like hang and talk in this class cause it’s kinda a free period and the other day he came and sat next to me and like his knee was touching mine but he didn’t move his knee and like recently he’s been talking more with me and like he’s been more active on my instagram too and idk I feel like I catch him staring, like is this a reach or could there be something there ? 😂😂🤨 I also think he’s reallly realllllllly hot