So you're saying that if your girlfriend cheats on you and you get upset by it it means you have a problem? Are you for real? Because from my pov it's you who's making no sense...
The problem is also enlarged cause it is Deb. Deb as the enabler has some problems for many players. Whether you are a fan of Deb or less of a fan. Whether you prefer to blame MC and his original cheating and behavior more or Debs behavior more. (Yeah Deb even has a point if she considered the marriage of MC to his ex cheating in the first place).
Now I am fully prepared to believe Deb does love her brother, what I am less prepared to believe that means Deb is loyal to or has his best interest first in mind always when comes to him. She broke her promise to him at least twice, while cheating with the wife behind his back
and not telling him (The sex in itself might be even be debatable in how much it was cheating also considering MC did not really mind it when found out), keeping it secret though at request ex despite their promise is another thing and again puts her loyalty to another over that to her lover/brother), but way more importantly and harder to forgive is the whole Millie situation.
Now sure she had divided loyalties and doubts, still she chose to forego the clear interests of her brother for those of others or herself (So her loyalty was not first to him there, whether you think Mom and the ex-wife were right to do as they did, nor did she come clean when it became a long term thing) while also being aware it was seriously hurting Millie that she had at least some duty of care to as an Aunt.
Well the whole Jules situation up to a point makes sense, while at same time hurt her badly as a LI or romantic interest beyond just sex. Her motivations to go through with the situation with Deb after MC pulled out were flimsy at best and the threat to fuck the old guy if MC did not man up ........ Well that kinda blackmail/ultimatum is exactly what you wanna hear from a woman you want to spend the rest of your life with.
Edit: Stupidly enough if Deb would have been open to MC about having sex with the Ex when it happened, instead of having some guilt and some nights with the Ex in secret, she could have come way closer to her dream if things would have panned out and gotten herself fully integrated in their relation. MC at least would have been clearly open to that considering his reaction when he found out.
