Wrong or right decision

I’m planning on moving down south as my Mum and Grandad died last year and my aunty and Grandma both live down south and I want to be near/with them iv been in a d/v relationship for the past 3 1/2 years am I wrong for doing it behind his back I know if I told him he would go crazy I just need to know if it’s the right choice or not i also had a miscarriage October just gone any 13 weeks so I’m not in a good place as well my life has been turned upside down from loosing my Mum to loosing my baby any advise would be great ?