There can be anger at a partner's stubborn obstinacy and pettiness, abuse, or outright betrayal.There can be guilt over perceived failures to have made the relationship work.
There’s a fairly well known average age differential in marriages where the husband is about 2.5 years older than the wife.
Humans have a mild Sexual Dimorphism with the males growing bigger and stronger than the females and full mating maturity takes a little longer for the men.
That’s going to be a mildly positive effect on the relationship.
He’s a little older and it’s easier to lead someone younger than you, so there’s a nice built in Alpha dynamic there.
She’s probably said, “I didn’t think I would go for an older guy, but….” and then fill in the blanks about why wonderful Mr. So when he is 55-years-old and she is 40-years-old, he’s still having to act like his competition is 40 to 45-year-old men. If he is 30-years-old, and she is 35-years-old, her competition for his attention are 25 to 30-year-old women.
Thus she must always keep herself in excellent shape, pay attention to maintaining a youthful appearance and generally be pretty pleasing in the sack.
There are particular risks for the older woman though.
I’m very often seeing the younger man, older woman situation develop, because the man has some sort of limitation with women at the time the relationship begins. If you’re getting into a relationship with a major age spread, it isn’t an automatic ruling out, but you do need to go into it with eyes wide open.
I know it sounds trivial, but all the little milestones like turning 40, if the husband hits them first…
there’s this tiny sliver of knowledge and experience he has over his wife.
Most couples are going to clump around the average and have normal age spread between the couple between about zero and five years in favor of the husband being older than the wife.