One whose purpose is to love and is filled with love.
A term originally derived from the Latin root Phil, meaning love, ending with an -o to make the term singular and personal: Philo = I love.
A play on the similar "fill" and "phil" sounds combines the word "philo," with "filled" to mean "I love filled" - therefore, a "Filo" is one whose purpose it is to love and one who is filled with love.
A person who loves and is filled with love is a Filo.
"I can't get over what a Filo that guy is, he lives so radically!"
-"I know! He's practically a Mother Teresa!"
"My husband is so loving. I'm so lucky I married a Filo."