HELP! I Am Getting Married To My Best Friend's Husband

Hello readers, this guy i'm getting married to used to be my X boy friend's friend & also used to be my best friend's husband. i've known him for almost 5yrs now & we have always been close as we do everything together & we had no secrets.. he tells me everyting even when he fights with his wife and i always advice him like a sister & a friend.

His wife took him for granted & had no respect for him, he complained a lot about it and kept telling me he got married to the wrong woman & not the wife of his dreams, despites all that he never left her till one day ... Ok let me cut my story short... after i broke up with my xboy friend becoz he wasn't ready to settle down with me. i was so hurt & depressed , this same guy that am planning to get marry to now wiped off my tears & lifted me up.

We are deeply & naturally in luv , his wife was shocked to hear that we are dating & also getting married so she kicked him out of the house & guess what?? i picked him up & he is living with me now. WHAT IS YOUR TAKE ON THIS, AM I TO BLAME HERE OR AM I THE BAD PERSON HERE?