In the Jessica pool scene, what options do I need to select to get the sex? It seems that she doesn't have sex no matter what I click :/
First be sure you both have max Lust and her Love might have to be maxed too, always a good thing.
Secondly you need to give her the Towel and you need to have an Erection, so be sure to check you got that boner!
Lastly when she ask about her breast, don't say anything, just look at them, her anger will vanish when you get to explain your silence.
This triggered the Sex scene for me, but it might also be a chanced based thing, so scroll wheel back to the choices if it doesn't, provided you got all above mentioned factors checked