Money situation

Me my partner are moving in together he works i dont im on benefits uc and pip (im based in uk) how do you go by sorting money we will be joint claiming do we put all the money together split it between us and we both pay half the bills or does he pay more to the bills.than me if we do it that way he has more money left than me his wages is 75% more than what.ill get.from benefit top up. He is.used.to keeping.most.his wages.and.just.giving his dad money towards food shop and gas and electric i dont want.to be gready and ask for some.of his wages.but.i feel entitled to it since we will be living together