This is a slightly more interesting take on the typical het shoujo thing. The girl isn't lusted after by other people, and she's rather weird. It's kind of creepy how the romance is being approached, but it's lighthearted enough that it's not so big of a deal. Plus, so much manga out there has flat out rape between the main couple, so a little pushy stalker behavior shouldn't be too shocking. Seems like it'll stay on a pretty predictable path, but who knows.
Urami-san wa Kyou mo Ayaui