their fathers curse

The Addams family siblings DNA was special...
Their pasty white skin from their mother contrasts with the blacker than black heart from whatever parent you chose to believe they get more from in the battle of looks. They got their powers from the patient that copies their gender with the male having his sparky touch from his father and his sister getting her physics abilities from her mother. But what if they got something else from their father... What if they got his obsessive love trait too... A love that affects each of their partners and is titled "the Addams family curse"...