What does it mean when a guy loudly says good morning, gets your attention, then sits beside you?

[tnxug]

[Account]

More context needed.
It means he felt comfortable around you and he was also being polite.
That is all I can assume from what you describe without additional context, there is no way to assume anything else.

[Nikki1989]

How many more accounts are you going to make to ask this?

[AngryCarl3]

He doesn't want to help you study, that's for damn sure.

[Anonymous]

It means you’re trolling this for years and need to get over it.

[DryGermanGuy]

Go away, you weird little person.

[queenofcardio]

He's being friendly

[exitseven]

sounds like it to me.

[bowenw]

I think it means he likes you.

[AngryCarl3]

More context needed.

[Anonymous]

It seems like he could want your attention.

[Iron_Man]

Yes he does. does that make you happy

[madly0002]

what he wants

[Iron_Man]

Maybe he wants to date you

[In_Trance]

Stop posting this you troll

[Pterodon]

Nothing really. Just happy to see you

[slatyb]

Yes, he does.

[Anonymous]

He's excited