@Shinra_Banshou I feel you're a bit too harsh. Like, you have a point, I kind of agree (then again, we call it Isetrash for a reason 😅), but...
Let me put a really extreme example, just to illustrate the point.
I happen to know that I will be hit by a truck (iseka-less) if I go down Street A. So I go down Street B. Now, OBVIOUSLY the plan is "not get hit by a truck"...or more especifically, "not get hit, period". So I assume you'll understand my panicking if I get hit by a car instead.
His plan is to avoid her, AND HIS, death by having her pursue the prince while he prevents the meeting of the prince with the heroine. Having her fall in love with him is not the plan, especially if her jealousy still triggers the Death Flag.