Since wifey material refers to qualities that a man sees in his future wife, it can mean that a guy is keen on a long-term relationship with you. You have all the qualities he wats in a spouse, and he’s getting serious about your relationship. But it is up to you to figure out how healthy his idea of wife material is. If you’re an equal stakeholder in the relationship, and he respects your individuality, then him calling you wife material means he sees a future with you. But you may want to correct him by explaining that ‘wifey material’ is a flawed concept.