My fiance doesn't want to move in with each other?

We both have two children and he doesn't want to get a house together. He says it's because we argue.. but he's the one that cheated in the past... he never takes accountability. I'm always the bad guy but he's always ready to have sex... but doesn't want to move forward... It doesn't make sense and I feel used😔. Why doesn't he want to move in with me?

My fiance doesn't want to move in with each other?
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