First of all, he can't throw you out. Secondly even if he is paying half the mortgage he cannot be violent to you, in fact there are powers that can make him have to leave the property although you may not want to go down that route. I suggest you contact the police and speak to the domestic violence co-ordinator or someone who can point you in the right direction. The fact is you may be able to stay in the house, and he will have to pay the mortgage, and that means all of it !