In my book, magickal ethics are always a worthwhile thing to ponder! 
Thanks for opening up this discussion, @Garnet! 
Love spells are likely one of the most popular requests magick-users encounter, and yet it is an area of magick that quickly falls into the “gray” category when it comes to ethics.
Francisco wrote it really well in a past post, so I’ll quote him here:
I think every problem has multiple ways to approach it, so long as the caster takes a bit of time to think creatively.
Want someone to fall in love with you? Rather than casting a spell on someone else, cast a spell on you to increase your beauty and self-confidence. Want to find your soulmate? Rather than picking someone out and casting on them, send a prayer to a deity or the Universe for a good and wholesome match for yourself.
I’m with you, Garnet- I have my code of witchy ethics and I don’t want to violate those sacred lines I’ve set for myself. The good news is is that we don’t have to! 
With a bit of crafty thinking, it is often still possible to reach your desired outcome without having to forfeit your morals or violate ethics
Personal witchy ethics are always a great and important thing to explore- thanks again, Garnet!