Interesting take. What’s going unsaid here is that one partner’s weight gain can also be associated with an unbalanced workload within the relationship. One partner prioritises the family, childcare, tending to domestic duties as well as sometimes working part or full time, to the detriment of their physical and mental health, and the often fitter, more trim partner prioritises themselves. In the interest of fairness I’ll also put the case that one partner might work long hours and not have time for healthy meals or exercise. Sure, this is an issue that the partner who is low on self-care needs to realise and address within their relationship but oftentimes the partner who is asked to step up to give the partner space and time for self-care, then shows a lack of empathy and awareness to their plight and sees it as the partner’s problem, not a relationship problem. It then becomes apparent that that partner is not ‘pulling their weight’, both literally and figuratively.