Not studying at home implies she's worse at studying?
If she's close enough to surprise him that fast, of course she's going there. Who wouldn't go to their boyfriend if he just said he's nearby, especially if he doesn't know you are?
"Maybe I said too much..."
How often is that ever the case in manga? And how often is the reverse true instead? In this case, absolutely the right amount.
Helping someone is sometimes more effective than studying yourself.
Yeah, she's not helping.
Is wearing unmatched socks is a new trend or author new fetish
Does it matter if it's hot? Personally I'm fine with either matching or not, though.