The demand comes around 18 months after the partner scraped the vehicle with their own, and the boyfriend at first told them “not to worry about it.”

Now, with the pair on the verge of buying a house together, the boyfriend has gone back on that and is asking his partner, who has a modest income, to pay their share.

When it comes to relationships, few things are likely to cause arguments more than the topic of money.

According to a Harris Interactive poll of 1,000 adults published by Women’s Health magazine, finances are the most common source of fighting among couples, with 50 percent of respondents saying they argued with their partner over unexpected expenses.

Yet the person posting to Mumsnet as GogglesM had reason to think that things might be different for them.

According to their post, they accidentally scraped their boyfriend’s car while reversing it out of his driveway 18 months ago.

GogglesM wrote that, at the time, they offered to “make a claim” on their insurance or “pay to repair it privately” but their boyfriend told them “not to worry about it.”

Fast-forward to the present day, however, and with the boyfriend now eager to trade in his car at the dealership for an upgrade, he decided to get all of the scrapes and scratches on it repaired at a cost of nearly £1,000 ($1,150).

The boyfriend then asked his partner to make a “contribution” of £300 ($350) towards the costs. But, with bills piling up and the cost of living continuing to soar, his partner simply does not have the money to do so.

Part of the issue, for his partner, stems from what they describe as a “large wage disparity” between the two of them.

“I earn a modest wage with a benefit top up and he earns over £100k ($115k),” GogglesM wrote.

“That’s not to say I shouldn’t pay for damage I have caused, it’s just the whole situation feels a bit off to me, especially to be asking for the money now so long after the incident.”

GogglesM found the partner’s sudden demand for money “really strange,” especially as the incident happened so long ago. More importantly, they thought they were contemplating a long-term future together, which would make such demands frivolous in the grand scheme of things.

“Our relationship has moved on to the point where we will be buying a house together soon and it is serious,” GogglesM wrote.

The boyfriend’s actions drew widespread condemnation among those commenting on social media.

Cocktailclub wrote that the relationship needed reassessment. “If he knows about the difference in your salaries and is happy to put you under financial pressure for no real reason then I wouldn’t be going into any kind of more permanent relationship with him.”

“Nothing less attractive than a tight fisted man,” OnaBegonia wrote. “Do not buy a house with him,” while Carefullycourageous wrote: “You can do a lot better. It never gets better once married.”

MissPiggy44 wrote: “If you’re a couple then at some point it should be ‘our’ money not mine/yours… it’s really odd that he’s asking for a contribution now. I’d find it very off putting.”

Stopthebus wrote that the boyfriend’s actions were “a worrying sign of things to come… If you still decide to go ahead, be 100 per cent sure that you’ve discussed every possible scenario, and how it will be dealt with financially, before you finally take the plunge.”

Newsweek was not able to verify the details of the case.