According to Osho, in bhakti-yoga lust is the restless urge that survives by chasing many objects, while love is what remains when that urge is gathered to a single divine focus and evaporates. By fixing all desire on God (initially conceived outside), multiplicity dissolves; then even that outer God disappears, revealing the inner oneness beyond 'inside' and 'outside'—pure love.
Lust keeps wanting new things; if you aim it all at God, the wanting fades and real loving peace appears inside.