In 1 Cor. 13 Paul talks about and defines love. If we believe he was an inspired apostle of God then his words were the words of God. He claims as much when he said earlier in the book, "These things we also speak, not in words which man's wisdom teaches but which the Holy Spirit teaches, comparing spiritual things with spiritual." (1 Cor. 2:13 NKJV)
All of us seem to have our own dictionary when it comes to defining terms. We want words defined the way we desire they be defined even if it means we write our own dictionary. Even the word "is" as small as it is came into question as to its meaning if you remember the days of Bill Clinton. The word "love" is a word we all seem to want defined the way we want it defined.
American society today has defined the word love in a way that is contrary to the way the Bible defines it. Love for the adulterer, for the one engaged in fornication (living together without benefit of marriage in a sexual relationship, etc.), and for the active homosexual in America today means not only do you not mistreat them, which a Christian should never do, but that you also embrace them in the very acts which the Bible calls sin.
They are not to be rebuked for sin in modern society but are to be treated as if they were righteous. You rejoice that they have been made free to sin (we now even question whether those things are sin) without stigma. If a couple has a child outside of marriage you are to think how wonderful it is that they have a child. This reaction to sin is now called "love."
Of course that means our society would have condemned John the Baptist who refused to hold his tongue with Herod and Herodias but rather told Herod, "It is not lawful for you to have her." (Matt. 14:4 NKJV) In our society today we want to do what Herod did and persecute the one who says these things are sin and keep him who speaks from speaking out as best we can. We would say John the Baptist was a hater and intolerant, the only true sinner among the three, and that beheading was too good for him.
But how does God define love? In 1 Cor. 13:6 Paul says of love that, "It does not rejoice at wrongdoing." (ESV) The Bible has declared adultery, fornication, and homosexuality to be sin or wrongdoing (1 Cor. 6:9-10) yet how many Americans rejoiced with the coming of no fault divorce freeing up the adulterer from blame? How many rejoiced with the most recent Supreme Court ruling on gay marriage? That was seen as being merciful, tolerant, a loving act, and it was about time they received equal rights and ceased to be discriminated against. There was no point in discussing it with God for if he was to disagree he would be wrong and besides we define love nowadays, not him. Yes, we have love versus love and the only question is whose definition will prove to hold out in the end.
Our society has had a desire to redefine sin for we as a people have been unhappy with some of God's declarations on it. Sin is no longer sin because of anything God has said in the Bible but sin is now what man declares it to be. It is no longer what the Bible declares but what man declares. It is what seems wrong in man's eyes, not in the eyes of the God of the Bible.
"Woe to those who call evil good, and good evil; Who put darkness for light, and light for darkness; Who put bitter for sweet, and sweet for bitter!" (Isa. 5:20 NKJV)