I think I'm being taken 4 the ride

not sure where to start... my partner lives with me i have a child from a previous relationship and a child with him. The problem is he doesn't want to contribute to anything he does contribute towards shopping but i have to ask him other wise he wudn't. He says he doesnt want to contribute towards the house etc as it isnt his n i cud ask him to leave at any point.. dats nutt to do with the mortgage just us living. I believe a partnership is a partnership... i have no problem putting my hand in my pocket so why cn't he... he cnt even take me out for a meal. iv'e paid for so many things for him. i feel like ive been so stupid.. i have spoken to him, his reason is he hasnt got as much money as me but on a monthly basis he receives more. i have a bit of savings n he states i have more than him. but if i spend all of my savings im guna be left with nothing then what..