Which One Does Shakira Speak?
I thought I was going to have another Full Liberman on my hands (haven't finished the last one yet) but thankfully the article provocatively titled Do You Know Your 'Love Language'? doesn't really have much at all to do with language, and nothing to do with linguistics. In this case, the word language is used as a metaphor for behaviors associated with personal relationships. It's common to use language in this way, but I'd be happier with, say, the semiotics of love, or something like that.