Love varies. C.S. Lewis wrote a book called The Four Loves. The four loves are called storge, eros, philos, and agape. Storge is the love of familiarity. The best example of this type of love is when good friends become lovers. They are so familiar with each other, it feels natural that they progress into a deeper, physical relationship.
But the most common type of love that we think of is called “eros” – the erotic type of love. When we feel lustful or feel attraction towards someone, this is eros. We have an animalistic response to someone’s physical appearance. It’s natural.
The second type of love is called “philos,” or “phileo,” love through friendship. You have best friends that you express love towards. You care for them, you worry about them, and you genuinely hope the best for them. This love lacks physical attraction.
The last type of love is “agape,” the unconditional type of love. When you have a child, you love them with all your heart. You are willing to sacrifice everything that you have for your child. You’re all in. You are willing to give your life to save theirs.