When i die who will inherit the house i live in?

I would make a will. Who ever you put as next of kin doesn't inherit when you die, they are just there to be called for example if your in hospital and the doctors need permission for surgery if you are incapable of giving authorisation. I'm not sure if your ex would get it. I thought that in the case of no will being made the estate goes to the closest blood relatives, so I ume that unless you have children it would go to your parents. Why not make sure your hard earned money goes to who ever you want it to be left to? MAKE A WILL!