That's a funny choice, I thought Europe was done with SMS. I can see this 1-to-1 mapping with other cellphone derived messaging like Whatsapp, etc being an issue for privacy but it's certainly possible to have multiple phones.
Weird. There is little that depresses me more than watching my wife sit at the table for hours a day slowly scrolling Facebook while ignoring me and the kids. We have talked about it and she's tried to reduce it to no avail.