I wonder what the relative numbers are for husbands vs. boyfriends. Not that the crime is any less heinous, but I believe I have read about the high probability of child abuse by live in boyfriends vs husband/fathers and wonder if it generalizes to this situation also.
We currently have a high profile case here in St. Louis, with one of the Rams (On stand, Faulk denies beating his ex-girlfriend) accused of beating the ex-girlfriend "mother of his children". Not homicide, but not pretty either.