I don't care what the law is in Spain, if you seduce a 15 yes old here, muchas problemas! I find your justification of pedophilia absolutely REVOLTING! The lads in Long Bay would also take a very dim view - and give you one hell of a flogging.
Aisha bint Abu Bakr's story is a thorny one, today, because of Mohammed being a religious figure. Not like English kings who married young wives, like John or Richard II, then Edmund Tudor, the father of Henry VII - nobody considers them role models. You can at least say it would be wrong, today.