Why is he writing Netflix and Chill?

Hi, so basically I know what is meant by Netflix and chill, but someone has just written to me if I'm up for it, but I only know that person through Snap. So what exactly does he mean when we do not know each other personally?

It's obvious. But the idiom "Hast du bock" really no original Anmachen.

Over Skype and you look over https://www.netflixparty.com/

The first question is: did he just write it to you or send a mass nap or put it in his story?