I think Jesus illustrates true love on the cross.
“Jesus said unto him, Thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy mind. This is the first and great commandment. And the second is like unto it, Thou shalt love thy neighbour as thyself. On these two commandments hang all the law [Ten Commandments] and the prophets.” (Matthew 22:37–40) (KJV 1900)
Jesus fulfilled the Two Great Commandments which automatically fulfilled the Ten.
He loved God with all his mind, heart, and soul, not only in life, but in death as well.
He loved God offering himself up in sinless perfection on the cross, the worst death any sinner could die.
He loved God with all his heart when he committed himself in Gethsemane saying "thy will be done, not mine".
And he loved his enemies when he died in their place. As they blindly wrenched the last drop of blood from him. While he asked God to forgive them for killing him.