my married EX

okay so six years ago how is dating a man for about a year come to find out he was married so I told his wife what had been going on Fast Forward to now I get a message on Facebook from him telling me he loves me and he's always loved me I told him to get the f*** out of here that he was married and he responded with no I'm not we got divorced and sent me a picture of his divorce papers I am in a relationship now but I can't help but think about him every day because I loved him when we dated until I found out he was married if he really loved me all that time why did it take him four years to get divorced should I give him a second chance and see what happens