Hello Dexter,
Firstly, Forgive me If my post is so late as to be irrelevant at this point.
In regards to love and the many forms it may take, I believe love can be unified if defined as genuine affection and concern for something be it a family member, friend, lover, passion, deity etc. While one may wish to express their love to a family member and a lover differently the underlying affection and the concern said affection spawns seems to be the motivation in common.
Do you not believe that could cause harm to a student or give them a reason to not do justice if they are not guided? Plato states, "a man who acts morally always ends up worse off than a guy who acts immorally." — Dexter
Regarding your concerns in leaving students unguided in their discovery of moral philosophy, I can understand, especially as we both see at least some truth value in Plato's statement. As for this specific case motivation must be offered for children and adults both to remain moral despite this disadvantage. I believe that generally there are no material rewards to be gained, for someone to choose morality even in the face of this truth they would have to be motivated by the desire to be good for its own sake. Achieving your moral ambition enables you to respect yourself, likely inspire others and reduce if even just an increment the cruel nature of reality. If liberty from your baser self and self respect are insufficient motivators than I suppose that the statement should be delivered with caution if at all.
Finally as for the ethics and morals I believe most important for your pupils to learn:
1) Compassion - To understand and empathize is to learn, to broaden perspective and enable genuine connection through your mutual understanding and bridging of the fundamental isolation of our subjective self aware existences.
2) Honesty- Beyond refraining from deception large or small, to face the truth of ones self be it good or bad allows an opportunity to truly connect to people, to improve and enjoy the truth. With no need to lie nor a desire to do so, one is always free, and can really be seen for who they are.
3) Bravery- To be honest one may have to face harsh truths, to be compassionate one must feel others pain and both tasks are arduous but If a person can face these fears they will have all they need to be a Genuine, Empathetic and Understanding being. To try and become such a person would be a goal virtuous enough, but were they to achieve this goal they would be pleasant company to any of our kind.
Shining Exemplars of our otherwise often cruel, arrogant and cowardly race.