Sarah Gallucci, 41, a single mother of two teenagers, asked her friend Jennifer, 49, to move into her two-story home six months ago. The arrangement was financial first: Gallucci was carrying a $2,000/month mortgage alone after plans to relocate to Paris fell through. Jennifer, who runs a media network and a mental health nonprofit, was paying full rent on a solo apartment with grown children gone. Both were stretched. The deal is straightforward. Jennifer pays $500/month rent toward the mortgage, contributes to utilities when Gallucci and her kids are away for extended periods, and splits household consumables — paper towels, detergent. Groceries stay separate. The two-story layout gives privacy: Gallucci on the first floor, Jennifer and the teenagers on the second. The financial relief is modest but real. Gallucci can now save again, afford a monthly dinner with friends, buy a book without guilt, take her kids to a café. Jennifer, with reduced housing overhead, can be more selective about which entrepreneurial projects she takes on — a direct quality-of-life upgrade that comes from lowering fixed costs rather than raising income. What's more interesting than the money is the support structure that formed. Jennifer drives the teenagers to school, shares snacks, talks to them about their creative projects. Sunday dinners run late over wine and pasta. The arrangement fills a gap that neither the market nor the nuclear family was filling: affordable, flexible, intergenerational mutual aid between adults who are not romantic partners. The trade-offs are real but manageable. Neither brings dates home — a rule for the teenagers' safety and mutual respect. Both manage noise, laundry logistics, and shared-space upkeep more carefully than they would alone. These are the friction costs of co-housing, and they appear to be well within tolerance. This story is a single data point, but it sits inside a much larger trend. Housing costs in the US have outpaced wage growth for decades, and single-parent households bear the sharpest edge of that pressure. The "Golden Girls" model — adults choosing to share housing outside romantic partnerships — is less a lifestyle choice than an economic adaptation to a housing market that punishes solo occupancy. The open question is durability. Gallucci still wants to move to New York eventually. The arrangement has no lease structure mentioned, no formal agreement described. It works now because both parties are in transition and the interpersonal fit is good. Whether this model scales or sustains beyond the current life chapter is unknown — but for six months, it has generated real value for everyone in the household.