Twitter relationship fail

Is Twitter ruining your love life?

Nerve directs us to a study suggesting "frequent Twitter users have shorter relationships than those who don't microblog."

An excerpt from Nerve's analysis:

Are people who Tweet all the time too narcissistic to commit to another person? Are they Tweeting twenty five times a day for work, and just really busy?

Or perhaps the most convincing (and least satisfying) of all — are they just younger? I'm sure that more twenty-year olds than forty-year olds tweet daily, and I'm sure they have shorter relationships too.

If a correlation between Twitter and short relationships is true, what does it say about modern romance?