At some point L&P said that there is no sexual relationship between Alyssa and Zac. Surprised me too and made all my speculations in this direction useless.I always thought that Allysa & Zacs sexlife (allegedly incestual relationship) together would make it easier to convince Sophia to have sex with Dylan and Ellie, and then they could have a mom swap party where Dylan could bang Allysa while Zac bangs Sophia