Do these college guys actually like us or is this just weird behavior?

So me and my friend (girls, both young adults) have basically zero experience with guys, and we’re both shy, so please help us because we feel like we’re losing the plot.

Situation 1:
My friend suddenly goes, “That guy has been staring at you for a concerningly long time.”
I immediately panic and go to the classroom.

We’ll call him Mike.

Situation 2:
The next day, another guy, John, comes up to me and says “Hey :)” I say hi back like a normal human being (barely), and then this guy gestures for me to come closer like we’re in some kind of secret meeting.

I got so embarrassed I basically hit him with the “i'm sorry I have to go”.

Later we realize… John is friends with Mike.

Since then, they keep looking at us ALL the time. And when we walk past them, they go dead silent like we just walked into a crime scene, or sometimes one of them (we don't know who) wolf-whistles at us.

Situation 3:
There’s a third guy in the group, Liam. This one is extra.

We’ll be walking by, his back is fully turned… and he will dramatically turn ALL THE WAY AROUND just to look at us like he’s in a movie trailer. This happened many times.

Like how does Liam know we’re passing by? And why so dramatic?

This has been happening for MONTHS. Not days. MONTHS...

No one has said anything more. Just a lot of staring. Silence. Dramatic turning.

We are so confused.

Do they like us? Do they like my friend? Me? Do they not? Is this normal guy behavior or are we accidentally in a very slow-burning college drama?

Do these college guys actually like us or is this just weird behavior?
Post Opinion