My ex husband called and told me he was getting a divorce why?

My ex husband cheated on me 6 yrs ago So i divorced him. He married her 3 mos after our divorce. Well after 6 yrs he calls me last nite and says there divorcing no details The whole call was weird to me. He knows im happily remarried was this his way of letting me know he regrets cheating on me? Or what do you make of this extra details we have a ten yr old. Last winter I told my ex he would have to fly down from mt to see her because I wasnt going to let my daughter go up there anymore Her clothes were dirty her stepmom didnt take care of her the 14 day visit. So even though you shouldnt be happy at someone disgrace Im thrilled! My daughter can have her relationship bk with her dad and I dont have to worry about this creepy woman being in my daughters life. They have no kids she cant have more he has raised her 3 my exhusband wasnt a smart cheater. And he can find someone good My current husband told me you shouldnt be happy over a divorce. He said how would you feel if someone was happy over yours I said she was she caused it! Karma is a mf or what goes around comes around Answered prayer I still have no clue why he would call to tell me that??We dont talk that often only civil stuff about our daughter as we ended on bad terms.