Bonjour!
I know a lot of people who had lost contacts but got back in touch because of social media. For exemple, my mum had lost contacts with her middle school best friends, but because of Fcb they are again friends and they talk on Fcb for hours! An other story is about me: I had lost contacts with my American friend (I did an exchange in Fenruary before lockdown) and with the help of Inta and Snap I'm again in contact with her.
