I disagree.... Sorry lol. Nothing truly in love be sinful? But isn't it also said that the greatest damage can come from the best intentions? Isn't that to a degree somewhat the same thing? If not, why not?
A good example of why it's not the same thing is euthanasia. While such an act may be done out of mercy or with good intention, it's surely not love. In fact, when it comes down to it, it is a selfish act on everyone's part, thus not compatible with love.