Karen or Deb
Which of the two was the one Dan loved most? He told Deb once she was the one he always wanted, but later, he told Deb that he had intended to breakup with her and return to Karen, before Deb told him she was pregnant.
Give Dan credit for having some powerful swimmers. Knocking up two women in those close a time frame...Welcome To The Jerry Springer Show.
Deb was with him when he died and no one can blame Karen for not being there, considering he killed the man she loved.