I understand that there are love idols. Jesus says, "if you love those who love you, what reward have you?" (in Matthew 5:46). So, if we love certain favorite people, but we do not love any and all people the way Jesus desires, then our favorite family people and friends could be love idols. By loving them and not learning how to love the way Jesus wants, we can be putting love idol people ahead of Jesus.
Also, there are people who adore their pets, but they do not love any and all people. And they can not handle relating with people in love, yet they can be very affectionate with animals. So, because they are not learning how to love any and all people, but are hiding with their pets, those pets could be love idols. Maybe they are kind of like comfort food, giving their owners a sort of non-nutritious comfort love; and so the pet love does not make them strong so they can do well in relating with various people.
This is a problem with any idol, basically, how in our relating with the idol we can make ourselves feel good, somehow, but we are not becoming strong against the cruel feelings and dictatorial emotions which can mess us. Only God's love is strong enough to win the battle to make us deeply and pleasantly quiet and have immunity so we can't be corrupted by evil things >
"rather let it be the hidden person of the heart, with the incorruptible beauty of a gentle and quiet spirit, which is very precious in the sight of God." (1 Peter 3:4)
God's love is all-loving and makes us strong so we can keep from being hurt or staying hurt (1 Peter 3:13), and His love with almighty power "casts out fear, because fear involves torment," we have in 1 John 4:17. So, if we seek comfort from what is less than God's love, this can help to keep us weak so we can keep on suffering in fears and their personality torments. And this can be a sort of idolatry, of depending on pleasures and pets and humans to make us feel better, instead of depending on God, Himself, to truly correct us (Hebrews 12:4-11) and strengthen our personality > Galatians 4:19, Ephesians 6:10, Ephesians 3:19.