It was Reed and Sue it easy. Now, I loved Reed and Sue. They were my 2nd favorite Marvel couple and were, IMO, objectively speaking, THE Marvel couple. However, they had far less obstacles thrown their way than Jean and Scott. You can name several. She left him in the early 70s over Franklin. But considering that they were married in 1966, relatively speaking, very little what I would consider real problems in the relationship.
Simonson put obstacles in their way, as did other writers. Morrison was the first to deconstruct the relationship. I'm always surprised by people who thought Jean and Scott were going to wind up together at the end. Early on I thought that. Not after Scott and Emma started talking. From there it's whether you bought the deconstruction or not. Myself, I thought it was revisionist, nonsensical psychobabble.
In my view, Jean freed Scott to be with Emma. Whatever guilt, remorse, whatever you want to call it that kept him from moving on with his life, she removed that. She didn't make him fall in love with Scott. Those feelings were already there.
Whatever I condemn Scott for, I don't condemn him for hooking up with Emma right after Jean died. She freed him to do that. However, I would think that at least the other originals, knowing nothing about a psychic push, would be MAJORLY pissed at him for awhile. Not chastising him in a couple of panels over one page. More like 6 months to a year of comics
Also, sucking face with his mistress at Jean's cemetery is on Scott as well. Jean freed him to move on with his life. Can he wait till thy get home? Then he's doing it again a month or two later. IMO, those thoroughly disgusting acts are most definitely on Scott. And Emma, of course. Thing is, I don't care about her nor would I really expect better from her.