@warehouse - oh dear. You do not sound good at all.
As for your "measly three years" well it's actually only one measly year in most situations in the UK as the age of consent is generally 16 over here unless there is a position of trust such as teacher/pupil. But it is a firmly drawn line and so it should be.
But if you want to defend a 15 year old girl being involved with a 35 year old married man and them being equally culpable you crack on pal. Shameful.
Completely different from teenagers of similar age experimenting with one just over and one just under the age of consent.