[ how far would you go to win the love of your target?]

For me to have a target, they'd have to be my ideal partner. I don't go after normal people because my jealousy and intimacy needs end up hurting all parties involved. I wouldn't have to actively fight human nature or rivals with my ideal partner. But if I ever met my ideal, I would consider them mine, or if they were mine and someone liked them, I'm not above murder for my ideal. I would do anything to make her mine if she wasn't and anything to get rid of anyone with attraction towards her. As for what is too far: Using violence and threats against her. Her feelings for me cannot be coerced. I hope this made sense.

tl;dr:
Too far: Coercing her to like me.
Everything else is fair game.