Why are my parents being this way towards me and my fiancee?

My parents are making a big deal about our two bedroom apartment. And my parents are giving us lectures about my dad helping us with the apartment. He was to live an apartment that is subsidized and they the heat. But it's cheaper than the we looked at. Plus we're paying half and half for a two bedroom. The lady at Riverview manor said we can't have a one bedroom til we're married. But we want a two bedroom which we have to wait for 9 months which is crazy.It's like my parents are controlling us. Every time I see them they bring up stuff from the past from mistakes I have done cause of being desperate to use my parents cards without permission. But now they're saying I can't have my ssdi money that I worked in to for ten years. They think it is there money just to scare me and I am not buying it. But they put my fiancée in the middle of all this. And my dad demanded a payee for us caus of he thinks that we can't manage our money. But me I have to have a payee cause of my medical condition but I'm getting better and I can tell my doctor that I am happy and getting married this summer. And my parents are against us getting married too. Also my parents think they know everything.