Relationships are hard enough as it is, but throw Facebook and other social media into the mix and it gets downright mystifying. What are the new rules of the road? A national social media survey released last week by Liberty Mutual’s Responsibility Project tries to find out.

Nearly two-thirds of 1,200 social media users polled believe ‘un-friending’ an ex is completely reasonable. However, a little over half of those surveyed thought it is irresponsible to “friend” an ex’s family member on Facebook.

Here are some other interesting findings from the survey:

• Two-thirds of those surveyed believe checking personal email is acceptable at work.
• When it comes to Twitter, 63% of women think CEOs shouldn’t tweet while 51% of men think they should.
• Nearly three out of four people think pets should not have a social media profile. Um, yeah, I'd have to agree with that.
• Twenty-five percent of men find it responsible to tag a friend in a Facebook photo without them seeing it first, while only 19 percent of women find it responsible.