How to tell if a guy in your class is slowly falling for you?

- stalled around in class to leave the same time as me
- wants to/asks to takes pictures of me and w/me (w my consent)
- suggests we work together on projects
- asks to go on a trip for extra credit even though he doesn’t need it
- moves seats and chooses to sit next to me in lecture
i feel like he is just be friendly but I don't know
How to tell if a guy in your class is slowly falling for you?
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