The last line probably alludes to the fact she's doing this sort of thing to get his attention and also probably to how that after last year's sasaeng issue Cube set up some sort of rules BtoB members have to follow on SNS to avoid any futher fall-outs. Like they can't reply freely to fans (only during official Q&A sessions like the one during 2nd anniversary). Probably he had to ask for permission to send this tweet.
source: BTOBDogha, BTOB_IMHYUNSIK
and they say melody is a sane fandom........ i wouldn't really call her a fan