What is it when you love another 'person/creature' or love 'yourself'? In a literal, practical way - for us all to recognise in relationships presented for our perusal, in the world around us - it’s just a strong bond with that other person/creature or yourself. It is just a way to be bonded.
And what is a ‘bond’ with ourselves? It is just being fully present, aware that ‘I am here’ and 100% enabled to focus on BEING to our maximum (no part of us holding ourselves back).
‘Love’ is just a way of relating to ourselves or others that enables us to maximally thrive.