What makes a 'real' paedophile?
Technically speaking, anyone specifically attracted to kids under 11.
Hebephiles like 11-14, while ephebophiles specifically prefer ages 15-19.
Anyone who is not specifically attracted to any of those age brackets technically doesn't count, and transgressors are considered guilty of statutory rape and/or sex with a minor, along wth abuse, grooming and any other associated charges.
From what I understand, even after the age of 16 (16-17 I believe) if somebody in a position of authority/power over them has sex with them and are older this is also a criminal offence now.
IANAL, but I believe 16-18 year olds pairing with other 16-18 year olds is consentual, but if anyone over 18 is with someone under 18, the younger is considered a minor for the purposes of law.
There may be additional complications with over-18s, if the individual is in a position of authority, such as students at university, where I believe age 21 is used as a defining factor... but this may be inaccurate.