User blog comment:San&Ashitaka/Chapter 51- Expectations/@comment-17002674-20131115171458

This news will make Erwin shippers happy. :))

According to Isayama Hajime himself, '''Erwin is single. He has not married yet because he's not certain when he will die.'''

For evidence, check this http://s414.photobucket.com/user/DUTP/media/Shingeki%20no%20Kyojin/55_zps7bc285ff.jpg.html  and you will see. That picture is an advertisement included in the latest Bessatsu issue.

P.S: I want to add this in to Erwin's Trivia, but it's locked. :(