He was married when he was engaged to Bristol and she was pregnant?
http://www.dailymail.co.uk/news/article-3091932/How-marriage-Bristol-Palin-s-hero-marine-ex-fell-apart-Bride-said-terrible-mistake-fled-Hawaii-Dakota-Meyer-just-months-wed-PTSD.html
They were to be married in 2008. His divorce was finalized in 2010.