Honestly, having a (hot) yandere who loves you seems like such an easy thing to control. You know what she likes (you). You know what triggers her Yan tendencies (you). So you just have to pay attention to yourself and the yandere. Pretty much shower the yandere with so much love that you would be able to have some leeway in case of any "misunderstanding" coming your way.
That's what I think, at least. Having a series about a guy or girl who has to deal with a yandere partner properly with proper communication seems like a fun concept. I wonder when someone would draw it...