Women are outearning their male counterparts. Yet, when it comes to matters of personal finance, many average Janes behave like scared schoolgirls, afraid to disclose their money matters to their partners. What gives? According to Bonnie Weil, Ph.D., a relationship expert, many women commit what she calls “financial infidelity” — they lie about their expenses, hide purchases, and keep their debt a secret from their husbands and boyfriends. The net result could be as ruinous to a relationship as an actual affair.