Bow.java

    public static final UsableCustomItem CUPIDS_BOW = new UsableBowCustomItem("CupidsBow") {
        {
            ItemUtil.buildLore(this)
                .setName("&r&dCupid's Bow")
                .add("&9Love is in the air!")
                .makeFinal()
                .makeSoulbound()
                .save();
            addUnsafeEnchantment(Enchantment.DURABILITY, 3);
        }

        @Override
        public boolean onShoot(Player player, EntityShootBowEvent bow) {
            SpecialProjectile.CUPID_ARROW.apply((Projectile) bow.getProjectile());
            return true;
        }
    };

SpecialProjectile.java

    public static final SpecialProjectile CUPID_ARROW = new SpecialProjectile("CupidArrow") {

        @Override
        public void onEntityHit(EntityDamageByEntityEvent event) {
            final Entity hit = event.getEntity();

            event.setCancelled(true);
            event.getDamager().remove();
            ((Projectile) event.getDamager()).setBounce(false);
            if (hit instanceof Animals) {
                EntityAIApi.setLove((Animals) hit, TimeUtil.SECOND.inTicks(30));
            }
            if (hit instanceof LivingEntity) {
                EntityTasksApi.scheduleTask(hit, 10, new EntityTasksApi.EntityTask(TimeUtil.MINUTE.inSeconds(5 * 2)) {
                    @Override
                    public void run(Entity entity) {
                        if (count < 10 && hit instanceof Monster) {
                            ((Monster) hit).setTarget(null);
                        }
                        hit.getWorld().spigot().playEffect(hit.getLocation().add(0, 2, 0), Effect.HEART);
                    }
                });
            }
        }

        @Override
        public void onInitialize(final Projectile projectile) {
            EntityTasksApi.scheduleTask(projectile, 1, new EntityTasksApi.EntityTask(20 * 10) {
                @Override
                public void run(Entity entity) {
                    if (!projectile.isOnGround()) {
                        projectile.getWorld().spigot().playEffect(
                            projectile.getLocation(),
                            Effect.HEART);
                    }
                }
            });
        }
    };