Just a random act of passion?
Or just plain unnecessary?
Most Helpful Guys
Ask Christian Grey... I think he considers it territorial. But it is only written in the third book, not the movie
It depends on the nature of the relationship. If it's one where he's very dominating and she likes the marks as reminders of who she belongs to, then fine.
Most Helpful Girl
It's not a bad thing some people might not like it but it all depends on the person