I'm still leaning towards Ruben not having minded the fact that Niall had sex with Mona because for one, he practically orchestrated that as a thank you for Niall. Two, Niall simultaneously is an extension of himself but also holds kind of same position as Mona to Ruben, as a wife. And when I say wife, I mean property because that is how he views them. Them doing it together, it's still his domain, still *his*. He still possesses them at the end of the day.
Alby and Benji got battered because they were foreign, other men, encroaching on his property. When it stays in his domain, well nothing to worry there now is it?

















