This isn't quite relevant to the topic, but pedophiles seem to use that reasoning quite often - they say they genuinely deeply love the child they assault, and the child loves them and the sexual acts.
Last year a man self-published an e-book on Amazon called "The Pedophile's Guide to Love and Pleasure: A Child-Lover's Code of Conduct". He detailed how to condition and love a child in preparation for sexual acts - basically a how-to in child seduction, which included presents and candy and showering affection. He defended the meaning of the word "pedophile", which he said doesn't mean child abuser or rapist, just child-lover. And he said adult-child love is pure and natural. (The book was pulled within months.)
Whatever our understandings of cultural norms, "pure love" feels too close to modern pedophiles' defense. I'd leave it at this - compelling children into sexuality was/is normal for some cultures, and we don't know the effects it had/has on those kids. So we superimpose our views, which by all accounts tell us adult-child sexuality is harmful to children.
I use the term "pure love" because, when I was growing up, I was a sucker for that sort of language in the anime I watched, and I never saw any problems with it, other than the fact that it's melodramatic. Perhaps "strong relationship" would be better.