The kind of love that the New Testament has in mind isn't romantic love but charity, agape (a covenant of affection between God and humans).
Elsewhere, I've written about romantic love, and I've argued, on the contrary, that eros is selfish, not selfless, compared to a proper secular existential attitude (something like camaraderie) that should replace the Christian confusions and fantasies.
But I agree that the platitude in question is likely based on the reality of human relationships. That anthropocentrism is what I'm criticizing since it's too small-minded.
And "God is love" is found in John's first epistle, not the gospel, unless it's somewhere in those pontifications too.