dating and past relationships

Hey ladies, I could use your advice! I was previously married in 2012 for 8 months and then we annulled the marriage. His choice, not mine. We were together for 4 years. For those of you who don't know, annulment basically means the marriage never happened. 
Fast forward to now, I met this guy, he's the sweetest guy I've met in a very long time. He wants to date me. I'm struggling with how to bring up that I was married for a very short time, even though state law says I wasn't per the annulment. 
Would you tell him all? Or just let it go as a past relationship that ended badly? Thank you in advance!