Self-esteem & shacking up

One study suggests "shacking up" could lead to low self-esteem among women in certain countries, including the U.S.

The reasoning? Check this out:

The study suggests that unmarried women who live with a partner were less happy than married women because they had violated "normal" behavior, had to endure disapproving glances from neighbors or hotel staff, and others pitied them "for failing to persuade their man down the aisle."

I don't think "shacking up" itself generates self-esteem issues.

However, I do believe women with existing self-esteem problems might be more inclined to prematurely move in with a guy in hopes of securing a sense of completion.

Those same women could have a hard time with the questions that sometimes accompany "shacking up."

Thoughts?