the thing is, David will be more forgiving of Anna if she cheats on him with Jake than Chris.
David will feel doubly betrayed and the marriage can no longer have a future, Chris only has to land a stab at Anna. let's not forget that he's already through the door with one leg. since he is "friends" with both David and Ana.
1. Yes, Chris is the closest to being the one to sleep with Anna, but only because he has been courting her for a long time.
Even if that happens, I don't think she will be emotionally attached to him.
I see instant regret and an attempt to hide what they did.
2. Jake, in turn, has just started, and as far as I can see, he has a game, he knows how to charm and keep girls.
Here I see the possibility of emotional attachment and great sex, which she lacks so much.
I think she will come to her senses and understand what she did only after he leaves her.
Again, these are just theories.
3. My David will never forgive betrayal (I hope there will be a choice in this case).