Icky is a good word.....

I am in my 40's and have a son nearly 21, to consider a relationship with anyone younger than me is not a nice one.

However if this was a male being the older we was discussing then for some reason it isnt so bad which in itself is weird.

On the other hand how would I feel if this was my son who is still 20 we was talking about ? As long as he is happy I really wouldn't care !

So I think I am in the place of 'if it rocks your boat' then go for it.