A 20 year old dating a 40 year old is disgusting to me. I can only think he/she is being taken advantage of by the older. They have no life experience and I would suggest they would be missing out a great deal. The thought of what the older person wants from the relationship also I find questionalbe.

But... I do not find any problem with the two being older, with both having life experience behind them - like 40/60. The younger one will have some independence, a greater sense of self, and I believe a better chance of being equal in the relationship.

Yes, there are many who will argue with me but that is just my feelings on the matter.