Relationships would be far simpler if people understood that love is basically how you treat your partner, not how you feel about them. Only YOU can feel the affection, but your efforts are what translates it into something they can understand and appreciate.
That break up (platonic or romantic), although painful, honestly will save you. Give yourself the chance to fully heal and recover but honestly let it go & let them go. You will find better, you will see better, and life will get better. This too shall pass.