What does it mean when a guy does these?

I have this guy friend (classmate) who doesn't interact much with girls and even said that no girl attracts him (a few months ago) and recently he found out that I was playing a particular game which he often plays too (pubg) and wanted to play it with me online. Then one day, as I was playing the game, he saw me online and asked me to message him when I'm done so he can join me. When I was done he just started the game the game (2 minutes?). I played with him yesterday too by the way, here's the convo.

*I replaced my name with 'anon' for the first line*

[6/12, 3:02 PM] Guy friend: Anon did you rank up or rank down from yesterday?
[6/12, 3:02 PM] Guy friend: by the way tell me when you're done
[6/12, 3:02 PM] Guy friend: I wanna play oso
[6/12, 3:31 PM] Me: I'm done
[6/12, 3:33 PM] Guy friend: Ok sweetie wait I'm almost done

*oso is the short form for also*

After that, he immediately became idle (probably sucided in the game or exit it) his game to join mine. Alright, I'll just get to the point. I don't really understand what he meant for the last line, especially for someone who doesn't interact much with girls (sometimes, never) and as he never flirts with girls in school.
What does it mean when a guy does these?
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