I just moved to a new state due to work (about 2 weeks now) , there is a Lotus (Tesco) literally in front of my house - I go there almost every day after work (to unwind) to their food court because the beverage guy makes one the best Nescafe Tarik.

So while enjoying my nescafe, I've just been observing my surroundings and something has been catching my attention for the past 2 weeks. I've been seeing these couples (Older men - Younger women) more often now. Big belly unhealthy uncles with good looking younger partners. We're looking at an obvious >15-20 year age gap.
I know this is normal, seen many, heard many, and known a few but since it caught my attention I wanted to put it out here.

Do older men attract younger women? or is it vice versa? Who makes the move first? Who approaches who?