Matchbreaker

the long version

When Lindsey Parker's father announces that he plans to remarry, she does what any good daughter would do: wishes him well and then sets about trying to kill his fiancee. Lindsey's botched attempts to bump Karen off do succeed in driving her away, but jubilation turns to guilt when Lindsey see that her father is truly heart-broken. In order to get Karen back, Lindsey must seduce Karen's new man--the only problem is, she starts to fall in love with him.