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I get plotlines and storylines and whatnot, but ... I mean seriously? Why would she cheat on him (well yes, the other one was probably some cuddly man who spoke to her soul or some such... or maybe she met a female bomb and discovered she docked at the wrong end of the bay or whatever) - but seriously, after seeing him shirtless and pantless and so on and so forth, the first thought after reading "she cheated on him" is like: yeah, right.
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Well, it’s entirely possible. After a long time being together, many people don’t really think of their partner as a sex god anymore, no matter how attractive their partner is to other people. Or maybe they’re sexually compatible, but not emotionally, and that can lead a person to seek emotional fulfillment elsewhere (most cases of women cheating is bc of this reason). Or maybe that’s just how some people are: they cheat for the fun of it, they like the thrill of doing something wrong behind their partner’s back and getting away with it. A marriage/relationship is not all about sexual attraction and it can absolutely fall apart even if the two people involved are hot as hell.
She cheated on him. Apollos's ex, I mean.
(saw previews of ch 3.5 on Twitter)