Complex sentence: Although he moves into Karen's house, he criticizes her desire to "own" things; even people, refuses to commit to marriage or give up his free lifestyle and tells her that he will not love her more just because of a piece of paper.
Split into simpler sentences: Although he moves into Karen's house, he criticizes her desire to "own" things; this includes even people. He refuses to commit to marriage or give up his free lifestyle and tells her that he will not love her more just because of a piece of paper.