Age is just a number... Age is really nothing but a number to be honest. Little people know or understand, love CAN occur at this ages... And sometimes love may not happened for a person at all, it really depends on the person. But I support this, love is love, no matter what.
There are more things to worry about than someone's age. If both parties are ok with each other, then I say let them be!
Who is anyone to state who someone should be with?
If no one is getting hurt, then where is the issue??