How do you move on from your husband having an affair

I posted a brief note a couple of weeks ago to say my husband confessed to having an affair for the past months leaving me his 3 children and family and friends absolutely devastated. He has told me that he wants to live with this woman in a flat with two other couples as she is from Poland the other couples are polished too. He is leaving me our 3 children and a life we have built up, he says he loves me !!!

But has strong feelings for her obviously feels he loves her but is sparing me that, this is what I thought was a good family man well that’s what he has portrayed for the past 21yrs, it would have been 25yrs new years eve to the night we got together I feel so hurt lonely sad angry, just wish I knew what to do next.