Proverb help

[Dadadadadaa]

I'm not sure if I'm in the right place but not sure where else to post.

I'm looking for a proverb that may or may not exist. I feel like it must exist and I feel like it's on the tip of my tongue, but I may just be imagining this. So hopefully you can help me...

Is there a proverb about people saving money in the wrong places? So to put it into context, in a marriage, for example, one person is wasting thousands of pounds on frivolities each month, and the other person is living off a minimum amount of money and paying for all essentials for them both (and the kids) out of that minimum amount of money and scraping by each month. The person spending thousands on clothes, expensive golf membership, dining out, nights out etc etc tells the person paying for all food, bills, fuel, stuff needed for kids to tighten the purse strings whilst not actually tightening his own excessive over-spending?

At a stretch, "robbing Peter to pay Paul"?

No.....but there doesn't need to be one. Just need the couple to sit down & talk about their finances.

I sense this is a reverse or slmeonextrying to get through to their offspring how bad their situation is.

It doesn't take a genius to see if one half of a couple is spending all their money on themselves whilst the other half is scrimping & saving then the relationship is doomed.

Can't think of one about saving money in the wrong places but there are plenty about hypocrisy! First take out the beam.in thine own eye, people in glass houses shouldn't throw stones, etc

If this relates to.your real life OP, I am sorry your partner is such a ridiculous selfish arse.

Ah thanks everybody. No not my situation thank goodness. My sister's . I was discussing it with my dh and kept trying to think of a suitable proverb that fit.

Penny wise and pound foolish?

Taking the piss?