exchange

i have a male french exchange student staying. he’s really nice, but doesn’t seem to get personal space. he always sits super close on the sofa ; puts his arm on the back of my chair when we sit; and leans in close to talk. when we met up with his friend (also french) his friend did the same sort of thing. is this normal in other countries, and english boys are just the anomalies? it doesn’t bother me, i’d just like to know whats up. any advice appreciated x