They are not a couple put together for a specific marketing purpose like playing a couple in an upcoming film. However, the two are friends. Although he has been linked to various women - including a famous athlete - he has not even come close to marriage.
She has a lot of movies coming out, so dating him could give her some good talking points for interviews.
While almost universally panned, Online Dating can actually be a wonderful thing. The false concept of "internet love" is embraced all to easily and leads to. According to the definition of dating, there's a difference between dating someone and just dating. Dating meaning, means you're going on.