Touche. It's avoidable if you know where and when it happens and you walk on eggshells around the house. Lock yourself in your room like an actual bratty teenager when Eric is in the house.
That is, unless you are annoyed by the idea that someone is boinking Ann.
Personally, I would prefer a version of Big Brother where Eric is not a complete asshole that tries to fuck everyone in the house while Max watches, but is interested mostly in Ann... and fights to keep her. I.e. a normal person even if he does one-two underhanded things.
Frankly, up to and including this update at least, Eric seems a 100% decent guy. Of course, the current version is toooo early in the development.
What annoys me with Eric is not that he boinks Ann, but the cocky "I will fuck all your family. Do you want to watch? Do you want some cash?" attitude.