Waving to a former neighbor

We often see each other across the room at the coffee shop and wave. He was our neighbor about 25 years ago--he and his gorgeous third wife. Then they divorced and it was he and his fourth wife--much younger and also quite attractive. They moved after their first baby, who I think is in college now. They too are divorced, and I'm not sure where he lives, but he doesn't look any different. Marriage keeps you young, I suppose. All that adjusting.