According to Osho, loving someone continuously is hard only when you ‘do’ love as an effortful act; action exhausts you and flips into its opposite—hence love-hate cycles and possessiveness that atrophies love. When love is a relaxed state of being—like breathing—it can be continuous. Focused on one person it’s love; when it becomes unfocused, objectless and universal, it matures into devotion/prayer.
Love lasts when it’s like breathing, not a chore; when it opens from one person to everything, it becomes devotion.