My FI thinks that everything I owned before we got together, like furniture I bought 10 years ago, is now ours. He even gets upset if I say somthing like "my couch" instead of "our couch." I'm happy to share my things with him; about 95% of things in the house are mine or my dad's (it's his house, I moved in 2 years ago after he went to an assisted living facility). Most of his furniture was in horrible condition so he didn't want to keep it anyway.
My opinion is things acquired pre-marriage are mine and his (not in a "this is mine so you can't use it" sort of way but just as far as ownership goes), things acquired post-marriage are ours.
Thoughts on this?