Hahahaha. Another can of worms perhaps?
I'm not sure if you are talking about finding a male partner about your age, or someone younger, which was specifically what the guy in the other thread was looking for (if I remember that part correctly).
The only relationships I know of between older women (all Argentinas) and younger men are "boy-toy" relationships.
I know two different brothers (Paraguayan) who are fairly poor. They work in vegetable stands. They're in their early 20s. Both of them were picked up by rich Argentine women at various times, who took them out, wined and dined them, bought them clothes, cellphones and one woman even bought one of them a computer (not a bad computer, either, cost about $3000 pesos a year ago). Another of the women offered to put one of the guys through university - she was a nurse. We're talking as much as 30 years difference in age and as little as 10.